I have a Visor platinum, and it's working pretty well for me. Yes, the backlight is worthless, but I haven't found that a problem since I don't use it anyway. Using the backlight on a PDA will suck the battery dry before you know it, so I avoid it. I get the feeling they might have designed the Visor backlight to use less power, but in the process made it uselss. Oh well.
As for good things, the USB cradle is nice instead of the serial Palm cradle. I also like the Springboard option. I may never use it, but it's nice to have the capability. A GPS module is pretty tempting. 
After looking at both, I'd say there's very little difference between Palm and Visor, give or take a couple points on each side. The USB cradle and Springboard are what tilted it to the Visor for me.