interesting thread! i have 6 horses so will update accordingly:
Opal TB - does jumpers, some eventing - bare all around, despite being a TB, she has great feet and has always done well w/o shoes
Sky TB - does jumpers and is full brother to Opal - unlike his sister, he has the stereotypical TB feet. after years and years of trying to keep him sound barefoot trying every supplement, trimming method, hoof boot, and more, he's in front shoes for the past 2 years and MUCH happier (and sounder)
Duke - TB/Clyde - eventer/dressage - Duke has pretty good feet but has a tendency to get sore in front b/c his legs aren't the straightest - his hooves are a hare offset in front causing him to ware more on the insides where they are prone to bruising as a result. i've had success in boa boots for riding in the ring if it's hard, and on trails, and for xc and dressage in a softer/deeper ring or on grass he's bare and has been fine. if i were to campaign him heavily, he'd be a candidate for shoes in front just b/c of his size and conformation, though since i prefer barefoot, he's fine the way he is with the boots since we don't compete heavily
Lucky - TB - dressage - lucky has good feet for a TB and is sound 99% of the time w/o shoes and has been barefoot for years. if he gets sore if the ground is muddy, i simply use my arab's easyboot epics on him and we're fine
Ridge - Arab - trails - Ridge has great feet, typical of his breed but we do trail ride on the roads. for protection on longer/rougher rides, i use easyboot epics on him as i found they fit the shape of his feet better than the boas (yes i know they are the same company) and they don't irritate his coronary band for long rides.
Max - Old/ISR cold - he's only 5 mo old (Opal is his mom) so nothing for him of course!!!