Which Bitcoin Client do you use and why ?

[roslinpl]

BitcoinQT and Mycelium. BitcoinQT out of tradition and Mycelium because it handles well spending from paperwallets. Evangelizing Bitcoin by tipping people with paperwallets and not having a good way to redeem paperwallets other than Mycelium pretty much forces me to this. Hear blockchain.info would work, too.

Blockchain is very good too. But online wallets are not so good as offline for me.

[Brangdon]

I use Bitcoin-Qt + Armory. It's the only approach I've tried, and it seems OK. I picked it because I felt it important not to depend on other people's copy of the block chain. I don't use cold storage yet, but I'm glad it's available. I use DropBox for off-site wallet backups, and also have a copy on a micro-SD card that I carry with me.

[igorr]

MtGox

[apsvinet]

Multibit, easy to use, works fine, good interface.

[roslinpl]

Mtgox is not a client.

It is like gox is bitcoin and youre the client.

[roslinpl]

Multibit, easy to use, works fine, good interface.

Yes I do agree.
Multibit is good client as well

[zemario]

Multibit and mycelium.

I think both are more no-non-sense as most. Although electrum seed concept is easier to manage.

Might swtich to paper wallets plus mycelium only. It supports encrypted wallets, so I could carry around a paper with a qrcode and spend from it using mycelium.

[Sheldor333]

Blockchain, until I have something, then I will probably use an offline wallet.

[roslinpl]

Multibit and mycelium.

I think both are more no-non-sense as most. Although electrum seed concept is easier to manage.

Might swtich to paper wallets plus mycelium only. It supports encrypted wallets, so I could carry around a paper with a qrcode and spend from it using mycelium.

Not bad at all.

[elavenil]

I tried bitcoin-qt but it keep synchronizing for weeks. so i backuped my wallet in blockchain and installed multibit. It is works very well.

[fluidjax]

I use armory in offline mode, and swap transactions using a usb stick between my online machine and offline machine that has the private keys.
You never know when you get a trojan or root kit, so for me this is the only way to be sure my BTC is really safe.

I also run a full Bitcoin node but it doesnt have any coins, and I use blockchain.info with 2FA as a hot wallet.

[rmines]

I use BitcoinQT because it has all the features I need, and is largely supported by the community.

[davidgdg]

Blockchain.info: easy, safe and seems to be very secure with 2FA

I also run bitcoin QT as a node but have no coins stored there.

[DGulari]

Bitcoin-Qt and Armory. Also, Mycelium.

Mycelium is dangerous.  Very dangerous.  It is Russian and bitcoin is illegal in Russia.  Want to get screwed?  Use Mycelium from Russia and you're gonna have KGB knocking on your door with a polonium sandwich any minute now.  

[davidpbrown]

Bitcoin-QT for BTC; though for alt-coins, I prefer the daemons as I can set those to RaspberryPis.
Blockchain for first time use of MSC and PTS, which allows easy send and receive to the one address.
and again Blockchain for small change BTC but then I'm still missing a good option for a wallet on my Android 2.2.2; all the apps I've seen, seem to be only for 2.3+

It's easy to export a backup from Blockchain and I'd suggest everyone who has an address there does that. It's too easy to get locked out, if you forget one of the passwords or if your mobile number becomes unavailable to you. I forgot the second password but had a early backup so could import the private key to QT; that address then lost to me on Blockchain but I could still transfer the balance. Blessed are pessimists, for they make backups.

[BitTheCoin]

I use Coinbase. It seemed to be a reliable online wallet, and their budget is very large. Bought myself a solid 0.25BTC. The only thing that sucks is that there is a 4 day delay to get your bitcoin until you become a level 2. You can do this by adding your credit card in addition to your bank account but it only works with Visa currently and I only have a MasterCard.

[MakeBelieve]

The Bitcoin-qt Bitcoin client because it's the most offcial Bitcoin client and I'm feel more secure using that from official Bitcoin devlopers.

[davidpbrown]

Incidentally, if you want to free your mind from client programs, take a look at NXT. The way that presents how the private key is everything, is quite an eye-opener - leaves the user quite naked - suggesting that they need to pick a private key! I suspect the variety of user interfaces in future might be quite varied, especially given the complexity of ideas around Bitcoin2.0; thinking of what might be possible in a few years, is quite exciting.

[bluemist]

Multibit on my day to day machine to keep the disk size down. I also run bitcoind on a linux box

[dserrano5]

Shocked that no one said Electrum O_o.