I want to stuff a bigger engine into my Rebel Pro. Running a Swiwin 190 now. Unfortunately Swiwin is having a tough go with this size engine. So I’m looking for other options. 300 is to big. I’ll also need one similar to this size in the future for a large plane.

what engine would you go with?
Looking for experienced folks in this area to respond.
1. is it serviced in the USA?
2. If not how difficult is getting it serviced?
3. what is your experience with the service?