Grinder, for you, I recommend one of two things.
1) Just go the full-blown keg route. It's worth it. Read the stickies, think through the process, and if you think it'll be something you like, well, I recommend you get 8 kegs, a CO2 tank, some bulk O-Rings from McMaster, and go the keg route. You can get by on a picnic tap indefinitely, you don't have to turn it into a full blown 8-tap keezer. (Although I'm aiming that direction, myself.)
2) Get a carbonator cap and a bunch of 2L plastic soda bottles. (link:
The Carbonator Cap ) Why, you ask? You get to buy the CO2 tank, but don't have to splurge on the rest of the expense. Also works on 1L tonic water bottles, or 20oz soda bottles. Portability. Convenience. Low start up cost. Plus, if you decide to go full-blown kegging, you already have the CO2 tank and regulator.
I've only met one person who uses a Pig, and he's not a fan. They're finicky and somewhat gimmicky. Me, I like my cornies.
But you can make average beer and run a good brew pub.
You're tellin' me. We've got one of those in town here. And I've stopped and drank at a handful of others. One in K.C. comes to mind.