Originally posted by Brandonn
The good pedals are made by Boss,Digitech,D.O.D.,MXR,Dunlop,and Danelectro.
The Dano minis are awful; they sound OK, but the casings aren't up to any abuse whatsoever. Boss are decent but basic (the GT multiFX are pretty good though). DOD are, in my experience, pretty awful.
If you don't know what you want from pedals, I'd suggest you go to the local guitar shop and ask to try out the Boss display. Spend a bit of time with each pedal, and if you think it will actually enhance your playing, go for it. If you can't work out what it's going to add to your sound, ignore it.
I personally find the following effects most useful; EQ, compressor, delay, wah, auto-wah, but your tastes may well differ.