This is just opinion so take it for what its worth.
I have no experience with this particular Progressive. I have used their shocks on Harleys, I now use an Ohlins.
I've had shocks done on my two Tigers by Wilbers and Penske, customized to weight and ride and I have Ohlins on my BMW RT. I don't claim any great expertise but I have spent a lot of money on them.
My impression is that Progressive is a sort of middle of the road product, quality wise. Better than stock most likely, not likely to be up to the higher end products (doesn't cost like it either).
I think for a heavier person, rather than a one size fits all spring you would be better off with a shock that is as closely tailored to you as you can afford.
I've decided that I do want to upgrade suspension on my 11 and after looking at the alternatives I think I am likely to send my shock to RaceTech for a rebuild, its a bit less than the Progressive IIRC and built to your specs. Another possiblity in a lower cost custom shock might be Hagon, I don't have experience with them but have heard some good buzz.
The usual problem with asking about shock performance from owners is that they only have experience with one shock, the one they bought. Its not like they had a chance to try all of them and even then may have no frame of reference to draw from to describe whats 'good'. Anything likely feels better than the stock Suzuki shock.
'14 HD FLHR
'01 HD FXD
'09 HD XR1200
'79 BMW R100