When you say up against wall, which wall? Are up against the front wall (the wide wall you look at while listening) or the side walls? Two different strategies depending on which wall. Up against side walls affects first reflection issues and a wide dispersion seeker might NOT be the best plan. This is the one rare case where a narrow dispersion speaker can work better to keep sound off the side walls. IF against the wider front wall AND you can get them away from side walls (meaning not in a corner), then wide dispersion is back on the option list so you can sit in a. larger area and still hear good sound.
SO I work for them, as a caveat, as the US importer, but ATC developed a speaker for home theater I use myself at home. I have an LCR of HTS40 passives. This is a three way speaker that actually hangs on the wall. They are serious speakers, but optimized to sound better mounting to the wall as tropically most speakers have too much bass once they are against a wall pr close to a wall. ATC makes an entire range of hand made speakers that hang on walls called HTS. Here's a link to the group so you can see what I mean: https://www.lonemountainaudio.com/2017/05/atc-introduces-home-theatre-series-on-wall-loudspeakers/
Brad