Most books will suggest a larger tank for the beginners. This is because when things go wrong, it happens a lot slower the more water you have. Things can go south fast in a 2.5 gallon pico! I somewhat disagree with this advice though. Frequent PWC
's are one of the keys to success, and are much easier to keep up with in a smaller tank. Anything over 10 gallons that you are easily able to do a weekly 20% PWC
on is what I would recommend. There is no sense in going with a bigger tank if you don't have the $, time, or dedication to keep up the PWC
schedule. I have a BC14 and love it.
The BC14 would probably be fine for a pare of false Percs depending on who you ask. If you can go with the NC24 or BC29, that would be better. The BC seems to be a little more well made, but I don't have any real complaints with my NC24 either.
I got mine for cheap from an eBay store. Dr Foster & Smith sale prices are probably close to what the price SHOULD be all the time. Shop around, and don't forget eBay would be my advice. Talk to your LFS
and see if they will hook you up on any equipt deals if you buy the cube through them.