Great Planes PT-60.
Great Planes PT-60 Trainer Kit .45-.60,71" | TowerHobbies.com
Of course, I'm biased. I'm building one right now.
https://www.rcgroups.com/forums/show...t-Planes-PT-60
My first trainer was the PT-40, back about 17 years ago. Rock solid, flew like it was on rails. Pretty easy assembly for a kit, also.