I just got a regular one, it is very comfortable, but the seating position is different too... I'm sitting further back on it.
No idea about the low seat, but I nearly bought one thinking it would be better to get more foot on the ground, but very glad I didn't now cos it would have felt too cramped.
I'm going to try putting the Sargent up a bit now cos I think it will be more comfortable for the ride.
Re-sale value is very high so you'll probably only lose 10% if you sell it on!