If you like your horse magazines upper crust, then The Horse Riders Journal is just the ticket. It's a different breed of equestrian magazine, with forays into high end fashion, polo and other activities at the gentrified end of horse ownership. You can buy a copy here:
The magazine is published in Denmark and hit the market about a year ago. It is sold in 20 countries and is published four times a year. They have a wonderful Facebook site:
Why can't we produce something like this here in the US?