I don't have a Almite Navigator, but I do have a G-10 Navigator and the standard drop point Meerkat.
The only thing I'll say on the subject of handle materials is that I'm not a great fan of FRN, but I would have to say the handle on the Meerkat is the best FRN handle I have ever seen, it's nicely contoured, basically smooth, but textured where it needs to be and the solid steel spacer gives it some much needed weight that I find lacking on most other FRN handles.
As well as the handle, a plus for the Meerkat is the new generation wire clip that Spyderco are releasing. It holds firmer than the normal bent plate type clip, it doesn't slide around as much, it doesn't snag as much and the knife sits a lot lower in the pocket.
On the down side I'm not a great fan of the phantom lock, despite this being one of the reasons I bought the knife in the first place. I find the phantom to be a lot harder to close one handed, and all but impossible unless you move thumb and all fingers down to the butt end of the knife. Also because of the nature of the lock there is some very slight movement in the scales when you are gripping the knife hard - now this doesn't compromise the locks stregnth one whit, but I personally find it a little disconcerting.
Personally with the later models having a VG-10 blade I would go with the Navigator.
BTW - if anyone from Spyderco R&D is listening.
I think if you were to produce a "Super Navigator" you would be onto a winner. Keep the exact same feel as the Meerkat (including the steel spacer, but minus the slight wiggle), convert it to a traditional lockback and put in the VG-10 blade.
Heck I would buy one, and I would bully everyone I knew to buy one as well <img src="wink.gif" width=15 height=15 align=middle border=0>
Walk softly, carry a big stick.