if starting out
for sha 256 aka bitcoins and a few others imo if you do alt coins stick with the script type . the sha 256 type don't pay to well right now unless you mine some of them as you mine BTC
S3
http://www.ebay.com/itm/Free-Shipping-Bitmain-Antminer-S3-Bitcoin-ASIC-453-GH-s-bit-coin-miner-S5-S7-/311459730189?hash=item488472530d S5
http://www.ebay.com/itm/Bitmain-Antminer-S5-Asic-Bitcoin-Miner-SHA256-1155-GH-BRAND-NEW-/272008627254?hash=item3f54fa4436shop around for prices these are examples to give some idea what to look for
script coins there are few. i list the top two highend ones and then one or two at 200 or so
This one has really dropped in price so some thing is coming soon or ltc type coins are becoming worth less fast
this the best most stable type Scipt miner you can buy
http://www.ebay.com/itm/A2-Terminator-110-Mh-s-scrypt-litecoin-miner-/262067839213?hash=item3d0475e0edthe next one and it costs the most to me is not worth the cost because OF KNC's lame way of ripping others off
http://www.ebay.com/itm/KNC-Titan-Scrypt-Miner-300-MH-S-2-of-7-/151840079560?hash=item235a5fbec8Those are just examples so youn have some idea of what to look for.
at the low end cost
grindseeds to me are the best ones for there cost , zeus might be next but are not that great you have watch which ones you buy for zeus miner
http://www.ebay.com/itm/Gridseed-G-Black-23-26-MH-Scrypt-Coin-Miner-Built-In-Raspberry-PI-And-PSU-LTC-/301753134546?hash=item4641e36dd2http://www.ebay.com/itm/ZeusMiner-Thunder-X6-Low-Power-Scrypt-Asic-20MH-s-Litecoin-Miner-/301759900899?hash=item46424aace3for zeus miner unless you have cheap Electricity even then i wouldn't buy any X3 ,I would only buy the ones marked as X6 , X3 and lower are power hugs.
be very care with someone saying they have GEN 3 Zeus miner for sell unless they can prove they have them they were never made, GEN 3 as far i know were not X3's
. and Zeus went bad about then and started ripping off customers to bad to they had a good product at The time that could have been another bitmain for Script miners. i can't prove but i feel and until im proved wrong Zeus some how ripped off bitmain kind of why bit main got out of Scpit miners all to gather . anyone can tell me diff but I won't believe it . if A2 and titan still sell good
. and they do .
check here for nice deals
https://bitcointalk.org/index.php?board=75.0