If a horse's sire looks like a Mack truck and his dam is a total dog, it's extremely unlikely that the horse has excellent conformation-- it's gotta come from somewhere and it doesn't appear like magic..
I like to look at a horse's parents, and even further back, especially if I'm looking at a foal, since they can change so much as they mature. A horse IS going to look a lot like its parents.
For me, conformation and movement are at the top of my list. And to me mares matter at least as much as stallions as to what they are contributing to the gene pool.
My nice horses and their nice offspring are not accidents, but from 19 years of careful selection and breeding. I do not just go "oh that horse looks good & has nice color & size & price." NOPE, I RESEARCH that horse, it's parents, grand parents and SO ON, it's siblings, 1/2 siblings, it's offspring etc. I don't buy just any horse. I buy a horse for it's conformation and the
conformation in it's pedigree/family, not just
names in a pedigree.
Heck, I even research horses my friends think of buying & give them the info! LOL.
Just because I go by conformation does NOT mean nothing else matters, it means that is what means the most to ME in my program.
If a horse has great balance and conformation, I don't care if it's tiny or tall, so size doesn't matter most to me.
If a horse has great balance and conformation, I don't care if it's a plain color, so color doesn't matter most to me.
If a horse has great balance and conformation, and so does it's FAMILY behind it consistantly, but doesn't have fancy names in the pedigree, I don't care.
There, I defended my saying that it's CONFORMATION that matters to me.
I hardly ever buy horses. It took me three years to find just the right black pinto mare! Once I find the conformation I like and check out the family, then size, color etc comes in and when they all fall into line, then I buy.