Hi zukahn1 !

If you are comparing 27x1-1/4 tires to 700x25, then you don't really have an apples-to-apples comparison.
The skinnier tires will roll easier but feel much harsher.

That being said, I prefer 27" wheels over 700 simply because it's easier to find quality rims for less money. Insofar as tires are concerned, I prefer Paselas over any other tire costing much much more, so the wider 700c clincher tire selection is not a factor for me personally.

For the same reasons, I would never even consider a conversion from 27 to 700 with all the concomitant issues. YMMV.