Joseph Audio Perspective2 vs Harbeth SHL5+

I currently own Harbeth SHL5+ and I’m generally very happy with them. I’m driving them with Audio Hungary a50i tube amp (50 watts class A) and don’t feel that the amp struggles at all. I have an opportunity to buy a used pair of Joseph Audio Perspective2 Graphene in excellent condition. Just wondering if anyone has had a chance to compare the JA Perspective2 with SHL5+. From what I understand they sound quite different but I’m not sure how. The Perspectives are obviously quite a bit more expensive than the Harbeths but I understand that this doesn’t automatically imply that they are better. Someone told me that the Perspective 2 is more in Harbeth 40.x league instead of SHL5+.

As good as the SHL5+ are, I do sometimes yearn for a wider and deeper soundstage with bigger bass (although I have a pair of REL S/510s to supplement). I would really appreciate if people who have made the move from SHL5+ to JA Perespective2 Graphene, or vice versa, can share their impressions.

Note: My room is 20 x 15 with 12 foot high ceilings. The speakers will be placed along the short wall. I can pull them out by 4 feet from the front wall and about 2 feet from the side walls. My room is treated with GIK panels. My biggest concern is whether my AH Qualiton a50i will be able to drive the Joseph Audios well.