Clear difference between Harbeth 30.2 & Super HL5 Plus?

Okay another question for this group.  I’m really struggling to get my Harbeth SHL5 plus to wow me.  I’ve had them for about 3 years and have them plugged into a Line Magnetic 501ia tube amplifier (100 w).  It just feel like I’m being pushed into the midrange frequencies of songs and missing nuances in the higher range. This surprises me given it’s super tweeter. Even the mid-ranges just seem slightly muted or muffled.  
I so want to be wowed by these speakers like I was when I tested them.  
I was told by another person who has these speakers that he has been blown away and seemed to attribute some of that to having a very nice solid state amp.   
I listen to mostly rock, post-punk, new wave and classic rock but also enjoy jazz and classical.  It’s the former that I’m struggling with as the jazz and classical seem to present well with these speakers.  
Thoughts?

@gunners01 - you’re always welcome to come by and listen to them at my house to see what these speakers are capable of. IMO, and from what I remember when I heard it at your place, the LM amp is not doing enough justice to the SHL5+. I tried the speakers with my other tube amp (Raven Audio Blackhawk), and they sounded like a completely different speaker, and not in a good way.

I don’t listen to hard rock or post-punk, but for almost all other genres these speakers are breathtaking. You’re more than welcome to visit :)

Firstly thanks for the offer.  I may still take you up on the offer to hear the Luxman. 
You are absolutely right and it took a failure of my LM amp for me to be pushed to do something different.  I now have a PrimaLuna EVO 400 and it is night and day.  Now all of the aspects of any music have seem to come to life. I hooked the new amp up yesterday and didn’t leave my music room for 5 hours.  No listening fatigue, just pure bliss.  
I ran the first 2 hours without a sub and was exceptionally pleased.  I then attached a new REL S812 and it took the entire soundscape to a new level...from one that was already exceptional.  
Thanks for the encouragement.  This far I’m hugely pleased but may still want to hear what they sound on a superb solid state.  Thanks!

@gunners01 -- It's great to hear that you're finally getting the results with PrimaLuna. The SHL5+ are some of the best speakers I've heard and definitely scale with better amplification. Having said that, given your preferred musical genres, I still feel that you'd be happier with SS class A, but then again I've not heard the speakers with Primaluna so I might be wrong. Good luck!

Which Luxman are you talking about? (-: I have the 550 AX/II driving C7's on the Trager stands. It's not quite tubes, but they get on quite well together. I could see the wrong tube amp being too much of a good thing with the 7's...as in having too much bass bloat. Maybe too ripe is a better description.