+1 on the Bev-seal ultra. Just make sure you get the quick disconnect fittings to go with it. Getting the tubing on to regular barbed fittings is a bitch. It's not the easiest stuff to work with as it's stiffer than standard line but definitely worth it. You'll need a few more feet than regular tubing to balance your system because it has less resistance. I got tired of having to dump the first few oz's when the tap hadn't been used in more than a couple hours because of the plastic taste/smell. Besides I don't know what petrochemical it is but I'd prefer not ingesting it. Even if it's not at a level where you can taste or smell it there still has to be some leaching into the beer.