Not necessarily. Some posters (JL on several occasions) have expressed issues with quads where common bias circuitry caused undesirable cross-talk between OpAmps (or comparators) in the same package.
I don't do hardly any designs with jelly-bean parts so I can't say with certainty which parts would have cross-talk issues.
It just struck me that rail-to-rail output devices are unlikely to have the problem.
Singles would work.
An alternate solution is to add 8 more diodes and 8 more resistors... preventing railing. I can post that solution if there is interest... next week sometime... another deadline looms ;-) ...Jim Thompson