Driod2 and DroidOS phones

I switched from my old Moto Q9c to the new HTC EVO 4G about a month ago. The thing is super fast! There's like a b'zillion apps available and the phone overall addresses anything and everything I would be looking for in the perfect hand-held device. I just upgraded to Froyo 2.2 which addressed any original short comings that have been discussed online regarding the EVO's initial debut. I'm still finding my way around the OS since the 2.2 upgrade.