Cant help with which one to build next. I struggle with that also. So many planes, so little time.
I also spend most of my build time studying how to build. I think I prefer building over flying. So many options to choose from. If I spent as much time doing it as I spend thinking about it, I could build one everyday.
RE: props. I have read that a prop for scale models should be around 25% of wing span. Worked out well for me. Bigger, she wants to torque roll, smaller, shes kinda slow for lift. Your results may vary. I'm NOT any kind of expert. Been flying about 1 year. Been building about 4 years. Opposing viewpoints are welcomed.
thymekiller