3 vs 8
My wife and I have both a 3 and an 8. The 3 is just all around lighter feeling. Lighter on the controls, quicker takeoff (both of ours are fixed pitch so may not be much different if your 8 is constant speed). Speeds are all about the same, approach, landing, etc. The red line airspeed is different though. Much poorer visibility on the ground with the tail down in our 3. Have a new full swivel tailwheel assembly that might change that some but it isn't on yet. Gear legs are significantly softer so wheel landings are easier in the 3, but wheel shimmy is definitely annoying. Got almost all of ours out, but it's a constant balancing struggle.
We love em both. The 3 is better for pure fun, the 8 is more of our F150 pickup that does it all really well and still maintains most of the characteristics from the 3. Enjoy noting the similarities and differences. It's fun swapping between the two.