Class A integrated amp recommendations

I’ve heard the INT25 and Luxman 590, this may not be very helpful but I had a hard time telling them apart, I’d imagine the Sugden will probably sound similar as well. They are all excellent choices, I’d probably let cost and looks decide since there isn’t going to be a big difference in quality. 

Thanks gentlemen!

akg_ca I'm actually looking at a used Sugden Masterclass IA-4 on another site.

but also used Pass int-25 or int-60.

hdprentice great list for researching options, although features are not as much of a concern as I don't stream.

I've thought about trying tubes but many years ago I had a terrible experience at a dealer demo'ing B&W805s (Silver Anniversary Edition if memory serves) with Cary mono-blocks. What I recall was feeling that I didn't deserve to be punished like that! In fact, that demo convinced me to purchase the JAs unheard rather than the B&Ws which actually sounded quite nice at another dealer driven by Classe separates (circa mid 2000s equipment). 

But I agree that musicality and nuance is what I'm looking for, and that I already have that to a degree. But because I have no basis for comparison I don't know if my system has already gotten me most of the way there without spending uber-bucks.

That said I have looked at the Triode Corp TRV-A300 and the Fezz Audio Ceti because I'm curious about the famous 300b experience. Unfortunately not only these but most others I can't audition due to the lack of dealers near me.

soix I lust for the the new JA Perspectives even though I've never heard them, but even used they are beyond my reach. Because of lack of experience with other products/systems, I don't know what I'm missing as far as 'improvements and sound characteristics'. I suppose maybe just 'better' or more of the sound that I already have is what I'm looking for.

BTW used or new in the under $3500 range but might go to $5k if it really 'wows' me.

I should also add that my listening space is long and narrow, with low ceiling approximately 10'x30' with listening position about 12' from speakers. Most sessions are at 65 to 70 dBs with peaks to 80 dBs as measured by free app on my phone. I know, hardly an audiophile or instrument quality setup but it does serve as a reference point.

I hear ya on the Perspectives, but used Pulsars can be had for around $3500 that’d surely be a very nice upgrade, and you’ve already got the stands.  Anyway, you did yourself a big favor picking JAs over B&Ws IMHO, and I’m very familiar with both.  Here’s a very nice hybrid integrated with tubed preamp stage and MOSFET solid state output stage with plenty of power, is in your price range, and could yield a best of both worlds situation with your wonderful speakers.  I’d be shocked if this amp didn’t offer just more of everything, and you can also play with tubes to custom tailor the sound to your liking if you desire.  Just another option to chew on FWIW, and best of luck. 
https://www.ebay.com/itm/385758808281