I love tall tanks and would much rather have one...although I do have long arms and can reach the bottom of my 110(30" tall) without any real issues.
Tanks taller than they are wide just look plain wrong to me. Unless I'm keeping a specific taller species (angelfish or discus come to mind), I'll always choose the lower version. Also easier to light if you do like live plants, though you are giving up on some of the taller species.
I'll take a 75 gallon over a 90 anytime, and a 33 long over a 55 anytime. One of the older 100 gallons looks better than the 150 or even the 125 (to me at least).
You can make up the lack of water volume on a 75g with a sump.
My 30" tall tank sits on a 36" tall stand, I have to use a step ladder to work on it. But there is nothing better then standing in front of my tank looking my arowana eye to eye.