What's your preference here? Tank, AFV, APC, half-track, truck? Then throw in the era, WW1, WW2, Korea, Vietnam, Cold War, Desert Storm, OIF, etc.
If you're looking for the best T-34 model, Dragon has several out that are superb. I've got two different T-34/85 kits, one a NVA one and the other a UTZ one. Both are great. I've heard good things about their T-34/76 Model 1940 so would steer you towards those kits.