I've done my homework and searched the messages, looking for tools to do handheld development in concert with VFP.

Few tools have sprung up, but I feel I don't have enough information to choose one. So, whoever has done an app which has some forms on a handheld which are then synchronized with a VFP app, please share your experience. What am I looking for?
- ease and speed of development
- covers more OSes (i.e. I don't know what type of a handheld would it be, not yet)
- debugging