Haven't owned one but a friend brought one around to the vault one day. It's pretty good, nothing amazing. He bought it new for around $2300 AUD - that's more than I paid for my used Soldano HR50+ and it's thrice the amp the Boss is.
Not sure if that's helpful but the bang for buck with the Waza isn't all that impressive. Mind you it's cheaper than a Kemper or Axe FX, I guess I find a lot of the digital stuff expensive for what you get.