TWAIN or WIA for X5 running on W7-32b?

I am scanning from two different Ricoh high-volume MFPs and they offer both drivers for each machine. What is the best driver for this setup?

I am very familiar with the TWAIN driver, which has been updated but mostly unchanged functionally for almost 10 years. Ricoh's latest software offerings have been a little odd, but I would be willing to try the WIA driver if there's any advantage.

Is it alright to have both installed at the same time?

Thanks in advance for any advice!