Depends, is it a 4-motor drive or a 6-motor drive? Both of them are solid, but you could go for a ratio with higher torque with a 4-motor drive, while I would recommend slightly more speed for a 6-motor drive. Both of them are really solid though, and I think that you’re probably good to start working on other parts of your robot. One thing that you might want to note, is that 360rpm on 6 3.25" wheels is a pretty short drive base, while 360rpm on 8 3.25" wheels is much longer, and nears the length limit.
A lot of other good drive base configurations can be found in this Catalogue of Drive Gearings