Harbeth 30.1, 30.2, XD

I have listened to both 30.1 and 30.2 at the dealers about 3 or 4 years ago and they surely sound different. 30.2 sounds slightly more open with better clarity. The 30.2 sounds slightly brighter than the 30.1 which is warmer in comparison where the treble is less airy or sparkly.

I do not have experience with the XD version of the 30.2.

In minor increments Harbeth has been inching its way towards a more "modern" sound, though it's still far from aluminum enclosures and beryllium tweeters.  If you favor warm, stick with the ones you've got.

+1 @twoleftears

choice of associated gear easily bridges the fairly minor tonality adjustments harbeth (primarily uptilt) has made to its later versions of the various speakers in its line