Probably just a small wording problem, but to clarify: the comfort taper has wider spacing at the bridge, and slightly smaller spacing at the nut, than the classic taper. Or to say it another way, with a comfort taper the strings start out closer together at the nut, and spread out more at the bridge.
I'm not sure there is anything that could really be called standard, though perhaps the classic is a more typical arrangement. Personally, I think the difference is more noticeable at the bridge (right hand, most of the time), and I happen to prefer the closer spacing there.
It depends a lot on your playing style. If you don't have the opportunity to try them on real instruments, I suggest you carefully measure the spacing on your current bass, and figure out what it would be like with the custom taper. Draw the two out on a piece of paper, or maybe try putting some little wood spacers or something between the strings to spread them out to the comfort dimension (not to play, but just to get a feel for it).
It is certainly noticeable enough to be a fairly important decision, but only you can decide what you like.
-Bob