Originally Posted by upnover
A lot of that will depend on the size of your horse's barrel and the length of your leg, along with the length of your upper body in relation to the length of your horse's back. A very wide 15.2 horse will fill more of your leg then a narrow slab sided 16.3 horse. My guess is if you're 6" you're going to need at LEAST 16.2 but probably closer to 17. Can you get on several horses and see what height/build you need?
I completely agree. When I was looking for a new horse I was looking for something taller as well, mostly because I have insanely long legs, but I ended up with my current gelding who's 14.2 hh. He's got a very wide back and takes up a ton of my leg, however I also look fine on horses 17 hh+, it all depends on the build of the horse.