The idea it is hard to get 26″ stuff is ridiculous. What it is easy to do is to get top notch 26″ stuff for silly money, I’m still buying 26″ stuff – like an EC70 wheel set new for £300. Yummy. And forks for 1/3 the RRP. For now I’d far rather top level carbon 26″ stuff for less money than average 650b stuff.
Obviously everyone is naming stuff they have had, so I’m going to do the same and nominate the Blur XC Carbon. I also had an original Heclkler, Superlight, and Blur Classic and they were all great bikes, ahead of their time.
That said, I agree with the person that said long travel, light fullsussers that still pedal well are the ultimate improvement in recent years. The short travel stuff was well sorted back in the day of the original 4″ Heckler. As a classic design, the Mojo has to be in the mix.