Ditto what Chiilaa said, but also don't forget if they've been taken by a pro, most likely they've been photo shopped as well......Frequently the horses in the flesh don't resemble their pictures a whole lot.
Your mare is only 5 and her face will dry out a bit more which will enhance her already gorgeous dishy-ness. Is that a word? If not, it is now
You've already said you don't want to breed for a few years, that's good because the horse economy is tanked right now. A lot of people are cutting way back on the breeding if not getting out all together. Hopefully in a couple of years things will be better and make a foal worth something.
I would look for a stallion in the Sport Horse Division, there are some gorgeous ones out there, and I'd try to make sure he had a nice short back, longer legs and a LOT of hip on him, to compliment your mare.