Quo invented a great style and made it their own. Maybe they should have thought twice about some of the songs they covered in later years. Anyway, while I prefer the Quo of the 70's, I'll happily applaud any band that is still packing them in 50 years later.
We supported them a few times in the early 70's and one gig was the Winter Gardens Pavilion, Weston-Super-Mare. The dressing room was in a different wing of the building, a long way from the stage, must have been about 100 yds around all the corridors, when they started up we had to shout to be heard!