I was thinking about mentioning the Millie in my first post, but backed off as I think the Para2 is a better first choice for you given the other two you picked up. You already have your ZT for a 4" knife in your arsenal, and its framelock is comparable to the linerlock of the standard Military. (There are framelock Millie's too.)
It's funny, as I think I prefer my Millie's to my Paras overall despite the fact that I'm a huge fan of the compression lock and a tip-up carry guy. The thing with long knives is that in tip-up mode you have to "climb down" the handle with your grip to actuate the blade, whereas with tip-down one simply rotates the knife when drawing and the appropriate digit is right there. I have lots of other long knives and they're all tip up, to my liking, but I can see the logic behind the Military's configuration.
Anyway, after this long digression, I'd still advocate for the Para2 for you, but will only half-jokingly lay the standard BF answer on you--get both!
They make a great pair!