Bk XLS200 sub here with small stand mounts in a second system and it’s so much better for it. No room correction here, just don’t make the common mistake of over egging it and keep the x over frequency low so it doesn’t give away localisation cues that the main speakers are getting their stereo image right with . . . Then you’ll be fine.
I'm going to buck the trend and say I prefer no sub. OTOH I've heard a couple of systems sound good with subs - both were B&W systems with AV receivers. I believe you need an AV receiver or some DSP crossover that can do proper integration (with delay especially) in order to do it properly. Hopefully your AV receiver can do that.
Another point I’d like to make is ive gone from a supposedly powerful av amp to a hifi pre/power setup and decent transmission line floor-standing speakers and definitely no longer have any need whatsoever for a sub
The BK subs seem to have a lot of support here, and despite the slightly less than state-of-the-art website (in graphic design terms at least!) they look fantastic value for money. Any other options in the £300-£500 bracket that I should be having a close look at. Nearly all of the gear I have bought in the last 15 years has been used, so open to suggestions that might land in this price bracket 2nd hand.
I don't get badgers, I used to get a friendly fox that used to ensure that all the cats stayed away. I miss having her around, in the summer of 2015 she would sit companionably on the grass a few yards away while I sat on the steps and drank coffee. On one occasion she strolled up, gave my feet a sniff and then wandered off for a bit of a kip under the plum tree.