Golok,
I just picked up two blades from Frank at his store(top rate guy to deal with btw, makes a mean expresso!) I will be doing a review of the T2000S and T2000M shortly. I too am very curious of the capabilities of N690. I am have used INFI, 1095, A2, BG42. I would not be surprised if it rates at the top.
I am impressed with the fit and finish, NIB sharpness, attention to detail, the versatility of the sheaths and their function. I have owned Strider and Chris Reeve, and Extrema Ratio is right up with them on attention to detail and fit and finish. Extrema Ratio exceeds them both in NIB sharpness(a big deal to some people). The two models I got have very good balance of edge geomtry for hunting, utility and slicing tasks. Both are incredible and cost much much less than a Busse, Chris Reeve, and Strider.
I got to handle the folders. If these folders aren't a "Strider Killer", I don't know what is. (Hey I am not slamming the AR, GB or SnG. I really like my AR. I would like to get an SNG. I am just saying that the lock on the AR/GB and SnG and Sebenza is flimsy and weak compared to the Extrema Ratio folders.) I particularly like the M.P.C and Nemesis. SOLID, SOLID, SOLID!! For all intents and purposes, these things a fixed blade!
I will post a more thoughout review when I use the knives a while.
Hope this helps
Luke
P.S. It is a wonder to me they don't charge more for these knives. With their Semi-custom to custom quality and the incredible sheath system these have, they should be more than the other brands(CRK,Strider, Busse).