I would worry less about a particular brand than one that (1) fits your horse and (2) fits you. Depending on your horse's conformation (guessing he's a QH?), some of the saddle brands might not be wide enough in the tree for him. You probably should look at some good used saddles in a wide or xwide tree. You might consider spending a little money to have a saddle fitter out (www.mastersaddlers.org is a good source--or ask your local tack shop for a recommendation). If you don't have someone who can come out, read my article on saddle fitting at http://www.equisearch.com/horses_riding_training/tack_apparel/english/eq9points447/index.html. It's pretty easy to understand and perform these things yourself. Heck, if I can learn this, anyone can! ;-) The nice thing about getting a saddle fitter out is that even if they don't have the right saddle for you--or the couple you have for them to try don't work--they can tell you EXACTLY what you need to look for (shallow panels, wide tree, etc., etc., which will help you when searching used saddle listings on the Web, eBay, equine.com or a host of other great sites out there.
Good luck!!