Hi John and Thanks!
Well, you know I’m going to recommend Tasca kits. LOL
They are expensive, but in my opinion, the most accurate kits available. The suspensions are a little tricky and time consuming, but build up very nice. The fit is excellent also. They can be built with out any extra detailing to make a really nice model.
Some of the Dragon kits are nice, but do have some fit issues. I’d stay away from the older releases. Some of the Dragon kits have the wrong lower turret ring for the upper turret. Dragon kind of dropped the ball on its Shermans compared to their German kits.
Tamiya kits are by far the easiest to build. But do need a few mods if you want it fairly accurate. The 3 biggest things on Tamiya kits are the open sponsons, (not hard to fill), the open back road wheels. (Plenty of AM wheels on the market) and recessed weld beads on the hull. (Not a real big deal). It all depends on how accurate you want it .
I guess tell me what variant you like the best and how accurate you want to get and I can point you in the right direction.
This is a very good site that explains a lot about Sherman variants. Well worth a look.
http://the.shadock.free.fr/sherman_minutia/index.html
And a review I did on the new Asuka (Tasca) Firefly Ic Hybrid.
http://the-sherman-shop.freeforums.net/thread/151/asuka-model-028-firefly-accesories