My top recommendation is the Shirogorov, without a doubt, and the Model 95 in particular. I have two, a 95T in S30V and a 95 in Elmax. They're the best slicers I've owned, due primarily to the FFG, which (along with the CRK HHG), is the best all around grind for most cutting tasks. Other grinds excel in tasks an FFG wouldn't, obviously, especially in terms of toughness, tip strength, shaving, shallow slicing, etc.
Like the Spyderco FFG, the Shirogorov grind has a long distal taper, culminating in a very fine tip. But unlike the Spyderco FFG, the distal taper is not straight, but gently curved, meaning the spine is thicker until it nears the tip, providing extra strength. But... I wouldn't try popping beer caps or prying open paint-cans with it. I don't want or need my knife to be a pry-bar.
The Mod 95's ruined me for other knives, excepting customs and a couple outstanding makers like Rockstead (worth checking out, and worth adding to your list, the Hizen, Shin, and Shun in particular) and Direware. I was amazed by the Mod 95 when I first got it, so much so I bought another variety -- the 95T -- the next week. Every midtech I've owned was disappointing. The 95's didn't cost much more, but were on a completely different level in every way... it was like finally, this is the knife I've been looking for all this time. When I was not long into knives, I thought the Sebenza would be that knife, but... no. I love it, but not even close, IMO.
The Shirogorov F3 has a different clip and it's a liner-lock, but is another must-get for me. The blade is identical to the 95. Hold out for carbon fiber, anodized liners, and SRBS.
The Hati in G-10 can be had for cheaper, but I'd recommend waiting for one on bearings... it's almost the same knife as the 95, but Ha(lf)Ti.
The Shirogorov 111 is bigger than the 95 -- both numbers refer to blade length -- larger and it has a more aggressive profile; hold out for CF and MRBS, M390.
The ZT 0452CF is a great knife; I never thought of it as a slicer, but it has great flipping action. For hard use, it might be prone to having the lockbar pushed in and getting stuck, or that might be a random defect. Tightening the pivot works sometimes.
The Spartan Blades Akribis -- never owned one, never would. Poorly designed, ugly... I dislike the blade to handle ratio, and the look.
I've never owned a Diskin, either, but that's one on my list too, actually. The Vulcan Flipper, IMO is a great value, an awesome design, perfect choice of materials. Everything I see and hear of it is very positive, and I think the price will be going up considerably fairly soon.
Carson Tech Labs (Boiling, Griffin)... no idea, but I like a lot of what I've seen. Sealed bearings, lock-bar innovations -- CTL and Reate are well on their way to destroying negative perceptions of Chinese knife-makers... a bit over-priced, maybe, but not badly so.
