I have to agree, though there are a few exceptions. THe Jo-Han classics have some very nice wire wheels, as does the Heller Bentley. In fact Jo-han's Mercedes 500k and and Cadillac V-16 kits would be at the top of my list of recommendations. The custom crowd seems to have taken to the wheels from the 500K, so snag these kits while you can. The Heller Bentley requires patience, as there are a lot of really delicate bits, but your efforts will be rewarded by a really nice model. Here's a shot of my build of it. I replaced the headlight and carb screens with brass mesh, and added some wiring, but otherwise build pretty much out of the box.
Lots of good things have already been said about the Monogram classic kits, and I agree with all that's been said so far. The wire wheels are a little thick, but that is a common issue at this scale. The Bugatti Type 35 is a very nice execution of a car that's been upgraded with later model wheels, and possibly the radiator as well. It's a very accurate model of a Type 35 from 1966, but if you want it to look like it came from the factory, you have some work ahead. If anything the exterior is closer to a Type 51, but those had a twin cam engine.
The MPC '27 Lincoln and '32 Chrysler can be a journey into madness. Lots of tiny parts that don't all quite fit together, especially on some of the reissues. However, if you're patient, and are prepared for a lot of test fitting, they do make very nice replicas. Here's a WIP of the Lincoln chassis: Like a lot of kits, it has the big fat chrome spokes, but a coat of dark paint will make that less noticable if you don't want to do a lot of scraping and filing.
If there's any kits that I'd recommend avoiding, it would be the Pyro/Lindberg Aubrun, Cord, and Lincoln Continental kits. They are 50's vintage kits that have been thoroughly abused over the years, so be prepared for some serious scratchbuilding. The Auburn is still the only kit of the boattail speedster, and some nice customs have been made from it, but the Monogram Cord and Lincoln Continental are just so much nicer. The Lindberg Continental does depict the postwar facelift, while the Monogram kit depicts the prewar model, which a lot of people think is the nicer of the two, but if you just have to have a late model Continental, I'd almost think you'd be better off trying to modify the Monogram kit. However, some of the 1/32 Pyro classics are pretty nice, especially the brass era kits.