Get the bike that fits your trails, and ride your old HT to work.
You have to decide what you want to get out of your bike. Is it more important to be able to climb steep stuff, and make quick turns, or is it more important to have slack angles and plushness for downhills, and climbing is less important to you (not that the Tx won't climb good, just not as good). Do you race or want to?
I rode a HT for years and years, and finally got tired of feeling beat up at the end of my rides. So I bought a 5" Stumpjumper. I rode it for a few years, and while it was comfortable, I decided I wanted something faster, with better climbing, and quicker steering. I got an Ax, and have been pleasantly surprised how well it suits my trails, and needs. You have to be a little more on your toes when coming down, but the trade off, of better handling and climbing, is worth it to me. fyi. I don't race, but ride with folks who do
Go ride the two, and decide what feels right for your trails.