Originally Posted by ktblunden
There will be no difference. Save some money and go with the bucket.
I disagree. There is two minor differences. One is that the carboy is clear, some people like to look at their beer to see how clear its getting or how much trub has dropped to the bottom. The other is that its possible for plastic to get little microscopic scratches from cleaning or just stuff touching the sides. It's pretty much unavoidable over a long enough period of time. Those little scratches can make it so your sanitizer can't get in and properly sanitize and thus lead to infection (repeat infections if you don't throw it out after the first one).
However, that chance isn't huge on a per brew basis. Given 10 years you'll probably need to throw it out where as a carboy you wouldn't, but 1 year, 2 years? It'll probably be more than fine.
Also there is the point made above that you generally don't really need to use secondary at all, just let it sit in primary for 3-6 weeks. You really only need to rack to secondary if you're going to be aging it for much much longer than that, or you want to rack ontop of something like fruit or dryhop (although some people have had plenty of success by just adding to the primary). I only rack to secondary because I've got a 6.5 gal and 5 gal so I need to free up the 6.5 to start the next batch.