What is your pool of choise and why? Pros and cons? Tell me!
BitMinter
As a noob I mined with my GPU with their software, really easy
Ozcoin. As a noob i mined with a 5850 using GPUMiner on Slush's pool. LTC caught my attention for a while when BTC mining on a single GPU went useless and then i got my hands on a couple of USB Block Erupters. Today i run 13pcs of them. The small profits i make are invested in more mining hardware and the BTC community. I reached ROI pretty fast and kept mining just for the fun of it. The profits i make won't make me rich any time soon so i just... do it... because i can...
tl;dr: Choose what pools fits your needs the best.
In the end it's entirely up to you. Find what works _for you_ everyone has different needs and different wants. Best place to be pointed to would be the "Mining Pool List" -
https://bitcointalk.org/index.php?topic=104664.0 where you can see a vast amount of pools and their qualities. It's going to depend on your wants/needs/hashing rate to decide on the best ROI if that's your goal or what other agenda you may have.
You'll see in my post the current up-to-date P2Pool list.