hi mate i dont mind the hobbyboss kit as the worst problems are easy fixed
1/commanders cupola is to big in the hatch area it just needs asmall ring of card put in and the hatch trimmed to fit or replace it with a tamiya pershing one
2the mantle needs about 1.5mm added to the width not a great amount
they are most of the areas that iknow about .check out the pmms website as it has a good 48th reveiw section which has the hobbyboss shermans in detail i.havent seen the bandai kit so i cant compare .dragos popescu who regularly contributes to this site is pobably the best person to tell you about shermans he does know his stuff. hope it helps wayne