I was in Guitar Center the other day and got a few minutes to check out the Evolve 70. In short, I was not impressed, at all. The 70 has a 15" sub in it and the cabinet is HUGE. I figured it was an 18. I didn't try to pick it up but specs say it's 78 lbs and the cabinet is probably too big for one man. Next up, they dropped 2 of the mic channels, compared to my 50m. There's only 2 mic inputs, a L/R right input with RCAs and a channel of Bluetooth. Next up, the sound. Tubby and poor definition on the low end. Sounds a lot like the newer Bose units. In contrast, my 50Ms have a lot of deep end and the voicing has a ton of great definition. In short, the 50s and even the 30s smash the Evolve 70. It's not even close.