I cannot comment on the G2 except what I have heard from others. There are both good and bad things, NONE of which would stop me from purchasing one if the price were right.
I have 20+ years experience with the older frame Contenders and I really enjoy shooting and working on them. I have had a few problems, but VERY FEW, although they always seem to occur when I am shooting competition. TC has been very kind and supplied me with spare springs and replacement parts in case of failures. You cannot beat thier customer service.
My 7-30 W barrel is very accurate. I have shot it at silhouette targets at 400+ yards and have not been disappointed at accuracy or knockdown power.
The 7mm cartridge is versatile in that you can shoot 120 grain bullets at varmints, or load up 150+ grain bullets for bigger game. My most memorable shot was on a doe hunt. Dropped one like a rock at 275 paces. I used to referee soccer and I was pretty good at pacing in one yard steps.
G2 or Contender with 7-30 W barrel would be a nice gun to have.
Excellent choice.
Steve