1. I suggest you buy one of each. (But NO serrations.)
2. Try them out in gentle, non-destructive ways, then report back on your findings.
3. Whichever one you like least, sell to me for half-price.
4. Seriously consder buying a RAT-7 in the same steel, so you'll have a nice set.
(I have the RAT-7 in 1095, so I suggest you like the TAK in D2 more than in 1095.)
I have knives in both steels, but have no real-world experience that distinguishes between them. The D2 is certainly harder and keeps an edge longer. I have to use diamond tools in my Sharpmaker to work on D2.
1095 is much easier to sharpen. I can start and finish with ceramic stones.
Bear
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No fire, no steel.