I love stock Greenbacks and Lynchbacks are one of my favorites over the Creambacks. I found the M65 brighter than the Greenbacks and didn't like them when new. Need breaking time. The M65 and H75 rock in a 212. I talked to my friend who works at Celestion and also emailed them and they highly recommended the H75 and M65 in a 212. I love it, and no issues with the dB difference. Celestion said don't worry about that but I still prefer Lynchbacks. I am going back to Lynchbacks!