I have the M22v2 with the upgrade from the Ninja. I must admit that I did not listen to these speakers without the upgrade very long, therefore can't give a detailed comparison. The upgraded speakers do sound a bit warmer with a nice balance across the spectrum. I am driving them with an Outlaw Retro and LFM-1 plus sub. As an aside, the Ninja has been a great guy to work with. I look forward to any formal testing info. Later.