I have the base level 2022 Blur xc. Compared to my previous Neuron Trail bike this is at least as capable on gnarly terrain and no real comparison on the climbing and speed, the bike just wants to go FAST. Can’t compare to the Epic Evo, it was on my short list also but wanted a pure XC bike and didn’t want to pay for the Brain.
You can definitely race XC with either, but I will say the Blur TR is still very much an XC bike while the Epic Evo is probably “down country”…
With the xc 100mm, it’s very efficient and no real need to use lockout at all unless on pavement or very smooth climbs. I would also consider the XC version if available.
I ride a Large and I am 5’11".