I have a line on a 6 ply cortex set. 22/12/13/16". I've read 6 ply tubs are way heavy. I do have a 15" 6 ply tenor that I guess is kinda heavy, but not ridiculous. I gig most weekends, haul my own gear, and am now "middle age" [ugh] and had some back issues last year, so I'm trying to avoid "heavy" drums. I'm currently gigging a Rogers Big R which aren't quite as light as 3 ply ludwigs, but aren't heavy IMO. Would love to get some feedback from 6 ply owners before pulling the trigger on these. Thanks in advance.