I have never owned a 34TGA but I just purchased a 2007 35TSA on the workhorse chasis with the Chevy engine. Previously I owned a 1998 Allegro Bus Diesel Pusher. I cannot speak to your particular model but I can tell you that you will not be disappointed with a Tiffin motor home. They build an outstanding durable product that will take a beating. I have been driving a diesel for the past 12 years and have never driven a gas long distance. I will be driving 600 miles next week which will be my test of how different a gas is to a diesel.