I generally enjoyh the commuter case for most phones. However, i also enjoyed the Seidio Convert, which was effectively two cases in one. The firt was a surface case and was great for general day to day use and most work days. The second case was a silicone with a plastic "skeleton," which made for great protection outdoors for hiking, camping, and such. They are a bit more spendy, but I managed a deal on amazon and got one for only twenty-five. They do make them to accommodate the standard 1750mah or the 2000mah battery.
I only bring this up because there are many times i have a hard time dealing with the bulk a commuter provides, but usually justifying the commuter by the fact that its a great protective case. With the convert case you can get the best of both.