I believe St. Thomas Creations makes a 10". There are not many 10 rough in toilets out there. We installed one for a client awhile back and they seem happy with it. I have purchased one for my own home but haven't installed it yet. I'd go that route since moving the plumbing is a real drag. The offset flange is another option but will take some fooling with to get it right. It's worth a shot and they're only a few bucks. May as well try it before buying another toilet.