Scrounge some cornelius kegs (soda kegs). All of mine were free or at most about $5. Buy a CO2 regulator ~$70. Then set up an account with your local gas distributor and rent a tank of CO2 ~$3/month plus gas. You'll need a place to chill kegs, so scrounge a fridge, which can usually be found for free.
It may cost a *bit* more than a pig or whatever, but if you're sick of bottles, go ahead and step up to the real solution...kegs. I did the same thing about 6 months into my brewing career and have been kegging since. Good luck!
Janx