I think it's all about what you're expecting Mark. I knew going into it that the Tamiya M4 wasn't the most detailed kit, nor was it comparable as say, the 1/35 DML M4A1 for ultra detailing. However, it's a quick build (how often can we say that? LOL) and mine is going to be a gift for a friend.
There are super detail sets out there for people who want to go the extra mile. I just filled in the sponsons, filled some seams and added some welding at the base of the front glacis applique armor. I resisted the PE treatment, adding bolts to the bottom of the VVS units or doing the hull welds (I can't imagine doing a 1/35 Sherman w/o correcting these omissions).
It was a fun build -- that's all it was. Not a show winner, not something that I'll send to a site gallery or magazine. Just an item that my grateful friend will really enjoy.
That being said, I've heard that the newer Tamiya 1/48 releases and the kits offered by Skybow and soon to be Trumpeter will push the envelope in terms of accuracy. Good to hear!