Currently got a pair of 1s set up in stereo mode in my lounge, but thinking about upgrading to some 3s, much difference?

big difference from a 1 to a 3, but two 1’s in stereo probably sound pretty good already. If you have a big room you may notice an improvement, but I don’t think it would be huge. How about a subwoofer instead for little more?

I find two play ones set up as a stereo pair better than a single three. I think the three has too much bass for most listening. No idea how they sound as a stereo pair though. Only my opinion of course