The 400's a great bike, I agree with 2008+, but you may also want to check out the TMax, & the BV350.
Possibly the Kymco Downtown, & GT300I, or if feeling bold the SYM Evo 300i (2016+) if you have Kymco or the less common SYM dealers in your area (you were kinda hazy on location)
All of those will pretty much do what you're asking with the bigger ones being heavier, & the smaller ones having less left after you hit 70. Been looking at those myself.
2k7 B650 "Ohanzee"
2k8 SYM HD200 "Indigo"
2k6 Gray B650XR "Grau Geist" - Gone