I have a 611 Active on one of my bikes, and it’s pretty nice. I don’t notice much special about it, even though I have the softest elastomer in there, but perhaps it’s “pretty nice” for that reason; I haven’t tried it with one of the stiffer elastomer options.
I also don’t do long, aggressive rides on that bike, but stuff in the 20-30 mile range has gone off just fine. That bike also doesn’t have the most aggressive body positioning, so that sets me back on the saddle moreso than I’d otherwise ride on racier bikes (with more bar/saddle drop), which I think works in the 611’s favor.
I’ve not used the saddle in diverse situations, so I can’t say more about it other than it’s pretty nice. Pricing is pretty competitive with other premium saddle offerings, so it’s no more an gamble to try one than it is most other saddles, and I’d say it’s probably worth trying one, because they’ve taken a fairly unique approach to comfort with the Active line and build- and materials quality is quite good.
SQ Lab 611 Ergowave Active fitted to Breezer Doppler