I'd consider a Rives Audio room treatment plan the either build or buy your treatments...bass traps need size usually and this lends to a build...my results have been outstanding with Rives. I had a mix of custom built and RPG products in my room...(pics posted under my system)
Of course this makes sense if you own your dwelling, if you rent/lease...off the shelf might be better
Of course this makes sense if you own your dwelling, if you rent/lease...off the shelf might be better