Hey guys, I want to get into mining some bitcoin and I have about $2500 to spend on a mining equipment. I was on BFL's website and found this https://products.butterflylabs.com/homepage/50-gh-s-bitcoin-miner.html I was wondering if this is even worth it? I see they have new cards coming out soon with pre-order that are 300 GH/s for just a little more and are 28nm.

Also there are other websites that have other manufactures with pre-orders with 300+ GH/s for about the same price but i would have to wait until end of Feb 2014 to get mine. Is this a better option? http://bitmine.ch/?product=coincraft-desk-january-batch or http://www.blackarrowsoftware.com/store/prospero-x-1.html (100 GH/s for $290 X 10 minimum order= 1000GH/s for less than $2000).

Can you guys give me some advise on what to buy right now so i can start making some extra money on the side?