These chapters really are some of my favourites. I love seeing the characters just meeting and talking. Gohan as a super hero is a lot of fun. I kinda wish Gohan's super hero suit was even more Sentai-like, instead of just the helmet.
Vegeta's demeanor and comments to Gohan are just great. It doesn't really match with him proclaiming he would never fight again though.
And we have an introduction of Trunks. We've seen him as a baby and another version of him of course. Toriyama is really consistent in making the two Trunks into different characters though which is great, as they have completely different upbringings and histories.