I was in a very similar situation whereby I was choosing between a 1/2 ton and 3/4 like you. The only reason why I considered the 3/4 was for occasionally towing a lightweight trailer like you do. I opted for the 3/4 ton diesel as I had never owned one. For me, while I LOVED towing with the 3/4, having it as my daily driver kinda sucked. The ride quality difference between the two when commuting on solid ground and not towing is HUGE and heavily favors the 1/2 ton.
I have since sold the 3/4 and will stick to the 1/2, regardless of the make.
