Owens Corning 703 vs. Roxul Safe 'n' Sound?

Thanks for the advice and link. I’m not covering much wall, just right behind my listening chair, and only because I have to be very close to it. The wall behind the speakers and the sidewalls will have diffusion. The room is intrinsically pretty good sounding, for some reason. For room nodes I have ASC Tube Traps and a DSPeaker Anti-Mode 2.0 Dual Core.

I have a number of Owens 703 panels (with Oxford transparent cloth) and wood frames. They are very effective and haven't degraded over time, including having been moved to a couple of different homes. In lively rooms w/dynamic driver speakers they were effective at first & second side reflection points, & on the ceiling at first reflection point. Some I know have dramatically increased perceived depth of soundstage by placing one absorptive 703 at the midpoint between the speakers on the front wall; especially in rooms setup "landscape" w/speakers on the longer wall. 
In my current electrostatic live end/ dead end setup they work great on the wall directly behind the speakers. The spares are useful on the side walls close to the speakers, but don't have nearly as much side-reflected energy to deal with as when I used cone speakers.
Overall, I think Owens 703 & 705 are both good choices and reasonably priced. Cheers,
Spencer

Thanks Spencer. I am able to have my planar speakers (ESL’s and magnetic-planars) 5’ from the wall behind them, so I’m going to try diffusion there first, with absorption only directly behind the listening position---Eric.