Android :: Developing Smartphone App On Which Devices Suggest To Check App?

Before publishing a new app on the market, on which devices would you suggest to check whether it runs fine or not? What are your experiences? How do you handle this?Are there some empirical values, for example, do applications that run smoothly on a HTC Desire behave similar on all HTC devices? Are there some devices on which the app should definately be checked?I like to picture myself releasing a high quality product instead of throwing some crap on the market. :) But I suppose I am not the only one who cannot buy like 5 or more devices just to ensure that the apps works fine on every kind of device.