Audiovox CDM-9950 / Toshiba VM4050

I think I will be picking up the VM4050 this weds. I've heard about the 35k cache limit. I also tired to get onto mapquest at the Sprint store and it would not load. I'm not sure if I was doing it right though. I've got a old startac and am new to the WAP borwsers. Can the VM4050 use vindigo studio apps. Will MapQuest Mobile work?? I'm not so concerned about being able to surf the web like on my computer I know the phone cant do that but I will not be happy if I cant use the same WAP pages that other phones can. Also I've read the chip is faster in the VM4050. Will the newer phones comming out be using this chip as well, meaning that more games etc will work on it or will this phone just be skipped?