A small startup of approx 10 - 20 employees is looking into using Open Source / Free technology to save money on Operating System license fees, etc.
Assuming an Admin is competent enough to 'keep up' (and possibly gets help from "paid support", but not required), and assuming that possible incompatibilities with other people using Microsoft Office documents don't matter:
Is Ubuntu a suitable distribution for an Admin (or two) to maintain, and keep control of, or should they take a serious look at Red Hat / SuSE / other?