The Wildhare Extra is slightly larger and slightly more expensive than the GP PW and does not come with a hardware package. It is more in line with the EF Yak and I have heard fly's better which it should because bigger is better. Availabilty is again an issue as are spare parts but it is a well designed and built plane.

Surprisingly, these seem to be the most talked about planes in the 50cc gas range. I think more will become available but I did a thread a short while ago asking what is the best IMAC plane for a 50cc gasser that is available right now and the only consistant answer was the GP PW.