The Brooks is the better option but I like the suspension seat post on my Jamis tourer. The frame gives a plush ride but I find the seat post with a slight bounce makes it even plusher. That's the trick to a suspension seat post in that you lock out most of the bounce and keep only a little. Mine was one of the more costly versions but I can ride more miles with it on than off.
By the way, I still stand up on the large potholes.