One pool robot or separate cleaners?

I'm trying to handle more of the pool cleaning myself. We have a tanning ledge and no convenient outlet nearby, so I'm mainly looking at cordless options. Would one robot be enough to handle both the pool and surface debris, or is it better to use separate cleaners? Interested to hear what setups have worked well. We've been looking at Beatbot, Betta, and Dolphin so far.