My favorite Benchmade knife is the Benchmade Switchback 923 folding knife. It has a blade of S30V steel and a secondary blade (2" long) made of 440C stainless steel. I love the 2 blade design of the switchbacks. The blade is very sharp, has a very nice handle, and can be used in several situations. It also has the traditional Axis lock, which is my favorite type of lock. The all black finish along with the awesome 'Modified Reverse Tanto styled' blade makes this knife my favorite knife due to its unique design.
Unfortunately I no longer have this particular knife. I had lots of trouble now trying to find this knife online since it is now discontinued.
There, however, is a very similar knife, in fact, almost exact knife made by Benchmade and Taurus. Instead of the S30V steel, it has a 154CM blade. The secondary blade is silver instead of black. But everything else is pretty much the same thing. This knife is my favorite knife I own, and I do recommend it to you. I've heard that Taurus only produced 1000 of these knives and is now discontinued, so they are very rare.
The price however is quite expensive. It retails for about $200.
Check out this knife if you are willing to pay that much for it.
The pictures below are of the switchback I own.