Wilson TuneTots. They work well placed next to walls, in a small room. I tried many “best in class” bookshelf speakers from Magico, Raidho etc. While my favourite, cost no object are the Raidho TD 1.2 (I haven’t had the chance to listen to the Borresen yet), which just about work in a small room, although ideally they need more space to breathe, I have to say that, of all these speakers I have tried, the Tots have performed best in a small room. Not a large stand-floor performance by any standard, but really engaging and delivering just about the right amount of everything.
Many people judge the Tots by price alone, comparing them to bigger, better speakers for this reason or that. But they are missing the point. The point is that little else delivers this level of performance in a small room like yours. The larger Duettes, now discontinued, also do well close to walls but I found their output overwhelming in my small room, near-ish field.
I would NOT run a pair of stand-floor speakers in that room under any circumstances. Not even petite ones from Neat etc.
Edit. Sorry, I just saw your budget. I don’t think you can do much better than LS50 for the money. Have you considered placing the speakers on the short wall?