What type of rodent(s) would you recommend as a pet?

It seems that my kids have finally decided they really want a pet, and my wife is on board. We’re in the very early research phase.

It seems that we’re leaning towards guinea pigs (2 because they are social), but I suppose anything like a hamster or mice is a possibility.

Note: My kids are 5, 8, and 11.

Does anyone have any tips, suggestions, or things to look out for?