I hear what you are saying, mate, and may take the advice someday. Although I'm not OP.
But what I find is that I need a suit "today". Therefore I'll go with the MW suit, just the 1 and not the free one or the discounted one.
They alter it. I dress it up with French cuffs or a really nice tie. I then look really great in comparison to the others in the room. I'm naturally thin and have a tapered waist and decently broad shoulders.
I think most men that don't regularly wear suits, men that don't have the budget for suits and men that get surprised to wear a suit on a given day - those men would be fine at MW.
The 2nd critique, I would be wary of a JB suit or any custom made suit because I wouldn't want to pay $900 - $1,100 (walk out price, with Shoes, Tie and French cuffs) for a Metrosexual Special where I look like girly, you get the point.
I wouldn't want to pay for "My sisters jean", mate. The shoes are very important too. I might not, not, want to wear wingtips with extra point-y tips, that are a slim shoe. I may want something bulkier that transition to my normal day at the office or on Sunday at Church.
Great thread