First, I love the looks of the Memoirs collection and it looks fabulous with my raised panel cabinet above it.  I just replaced three toilets and one of them needed to be round vs elongated due to space limitations. I'm 5'6" and personally find the round more comfortable than the elongated even though elongated seems to be the preferred style. In my opinion, "Comfort height" plus elongated shape really works best for people 5'8 and over unless you have trouble  getting up from a sitting position. The round one at comfort height fits me best.