The easiest recommendation I can give, is to CALL kegconnection.com at
512-805-3300 or 888-686-3375. I say call because they get hammered with emails and have to play catch up, and when you call, they take care of you right then and there. I called and had all of my million questions answered about lines, manifolds, keg types pros/cons, force carbing, perlicks, etc. and then placed my order having spent LESS than I thought I was going to because I learned there were things I thought I needed in my system that I found out I didn't. Also, the components/hardware is nice stuff, well put together, and worked out of the box with zero problems. I'm sure other companies can offer similar luck, but this is who I went with for my 3 tap system (that I'm already wishing was 4).
So, long story short, and although I know others around here have had issues with kegconnection, I readily recommend them.