Most people list Djoko, Agassi, and Connors when listing all time best returns of serve. All 2 handed players. Borg also had a great 2 HBH return of serve.
I think 2 HBH is better. Easier to hit aggresive topspin shot, can be hit later, can be hit easier in open stances, can be hit with smaller swings, better for high balls and can be learned faster.
1 HBH is prettier and lends itself to slices, low and wide balls. But, you have to hit the ball farther out front, you have to hit from neutral of closed stances and harder to handle high balls.