Haven't bought one but t/e used one direct mounted with a game changer bag. I was impressed.
Ranging and spotting off the bag was pretty easy, bag made using the plrf10 real simple, and I thought easier to put away to set up to shoot than with a qd attach like I have on one of the other tripods.
I'm ok with the leveling head, but under time and stress, direct attach and game changer bag worked really well for me.
If you want scope, lrf, video camera, etc, set up at the same time to look, range, and record, while you shoot off a second platform, get the leveling head.
The hide topic on the able table shows several pictures with all the gear attached so you get an idea that having the leveling head makes getting on line/target a bit faster when speed is needed, if that's what you are going to use it for.