I've got my first (sprint) triathlon coming up at the end of July. I need a bike to train and race on. I'm comfortable on both road and MTB style bikes, but haven't ridden on either in several years. I could see myself using either style well after the tri is over. It doesn't seem like I should spring right into a tri bike since that's a pretty specific setup and I wasn't too comfortable on the one I test rode. I've also seen a tri-cross bike that looked like a good combination of a road and off-road setups, though I haven't had a chance to test ride one yet. My immediate goal is just to finish this upcoming race, but I would like to continue biking more afterwards and that may or may not include future triathlons. I've got a budget big enough to put me on an entry level tri or a mid-level road bike. Or should I just go with a generic road bike and be able to get an entry level MTB bike too?
I'm not necessarily looking for a specific make/model (unless there's a hybrid you think I should try), more for what would be the best most practical configuration given my needs.