I’m terrible at that too, along with anything fashion related… I’m also colorblind as it pertains to my wardrobe, never really know what “matches” and doesn’t.
Slim fit is good for V shaped people, since the waist is narrow compared to the chest. As for that stretchy wool - I used to think it was low rent, but now I realize it is one of the only ways to achieve a flattering profile for pants when you have very muscular legs. In terms or price range, I would say it matters more to get a suit which fits you better, and get it tailored afterwards. Differences in quality of materials can be observed on close inspection, but whether a suit fits well or not is the first thing people notice.
Depends on what your role is and what area of finance you work in. Obviously if you are an FP and A analyst at some barely Fortune 1000 firm, you don’t wear custom Italian suits with a rolex/hublot/etc. on your wrist. Never out dress your boss.
Avoid suits that are made in places like Turkey, Bangladesh, Southern Asia in general. Their glues and textiles manufacturing processes are wildly inferior to China, the US, Canada, and Italy (the best clothiers in the world arguably).
I could write a novel on suits and their quality but long story short, I would advise that if you are in the market for one, hit up Off Saks 5th Ave around X mas time. Look for a Navy, Charcoal, even dark brown (if you feel adventurous) one that is MSRP 800-1200, but on sale for like 400-600. Should be made it Italy OR made in USA/Canada/China with ITALIAN cloth. That will be acceptable also.
I do not care if it is Armani, Hugo Boss, whatever, if it says some random Asian country on the back tag for where it was made? DO NOT do it.
Brooks Brothers (retail not factory) on sale, 500$ and you won’t look out of place. Hell even suit supply is cranking out 350$ suits that look and fit great.
You don’t need to spend a grand+ to look good. Just don’t look underdressed/un fitted/cheap.
You should also never judge a man’s worth by his suit, his preferences, sure, but there are lots of millionaires who dress down because they can.