I live in nyc which is mostly flat. I have a set of "lightweight" wheels that are 1575 grams but not an aero profile. Because i'm 240lbs I have to be wary about going too much lighter that. Research tells me that tubular rims are stronger than clinchers so whether it be alloy or carbon I could go with tubulars to save some weight and keep strength up. FWIW, I do a decent amount of rides between 50-100+miles in length so the long duration aero wheels could make a difference. at the same time being 6'3" 240 doesn't make for much of an aero body shape so I wonder if wheels will even provide ANY help.

I don't expect miracles but small performance improvement at reasonable price is what i'm looking for. my research tells me that 60 or 88 mm profile carbon rims are heavy rims but they will be strong so even as a clyde I can go with 20-24 on the spokes and be okay. others have said that even at my weight a 38 or 44mm carbon tubular will still be plenty strong. If the aero advantage doesn't matter much, I'd rather go as light as I can because I notice a huge difference between my 1575gram wheelset vs my 2000+gram set