Hey pascal,
I own 2 Egnater 4x12 cabs w/ celestion V30's. I first bought 1 Egnater cab to A/B with a Marshall 1960AV and a Marshall 1960BV w/ V 30's which I own.
The Egnater cabs have a fuller, tighter clearer sound than the Marshall cabs. I just received my 2nd Eganater cab and the 2 Marshall Cabs are going up for sale.
Hope that helps,
Eddie