Business travel for men requires suits, shirts, smart shoes. This means a wheelie-bag a) to look after same and b) because backpacks ruin suits.
I have had a cheap Carlton (wheel squeak was terrifying and above safe levels), expensive Tripp (fell apart), cheap frameless case (zip went), mid-price Muji (lovely, but telescopic mechanism jammed - shut fortunately). I don't know anyone who has cracked the problem. Having just ordered a new case, this is the situation as I see it.
The trade-offs are between cost, weight, durability (or perceived durability), detail design (pockets, straps, handles, quality of zips, luggage tags), and satisfaction, presentation of self (social significance in Susan Boztepe's framework below).
Fashionable and not given bad reviews
Briggs and Riley, Rimowa
Sensible and probably what I should have bought
Interesting but not for my business purposes
Cool Tools has a favourable review of Rick Steves Convertible Carry-on
Sounded great, but doubts about actual weight
What I bought
Sub-0-G (not least because it was half-price). I chickened out of the tiedot design and now have to work out how to make a black case stand out.
Useful places for advice
Tripadvisor (new forum)