no, I don't think GUITARS sound okay with hughes and kettner amps, but that's me
most of their current offerings are full of innovations geared at metal guys and they favor super high gain tones at the expense of a decent clean sound... I have also seen more broken tri-amps on the road than any other amp but the JCM2000 series (they just don't build 'em like they used to, but they sure do pack them full of pointless gizmos you would not miss if they were not there)
although the puretone by H&K is okay... if you are looking at a puretone its a good amp with a nice vintage Marshall on steroids sound.... never seen one broken either
others will disagree, but I just find H&K to be europe's mesa... jamming all those options onto a small amp chassis is just asking for reliability issues... also, even a simple bright switch will have an effect on tone even when n bypass (its got plenty of extra wires to act as an attenna and to add capacitance, put enough voicing switches and you are trading some of your signal for bells and whistles), so adding lots of potentiometers and switches to make the amp super versatile is always taking something away (this is my complaint with the ampeg V series amps thata re being discussed in another thread).... channel switching is a tone suck too, don't let anyone tell you otherwise... only the best engineers seem to design around it effectively and a Soldano or Tone King is an expensive buy in... I have NEVER been knocked out by the H&K stuff. Its all 'okay'. Those amps sit tonally in the Soldano camp of high gain, but are not made as well and it doesn't sound as good as a result.
I think if I had to build a rig from 'almost' scratch like you are doing and I already had a tubescreamer I would just get a silverface deluxe reverb. I relied primarily on a 60s Princeton reverb and pedals through a lot of the 90s and was never disappointed by the tone. Not the sound I was shooting for, but I always sounded good and was seldom too loud (though the deluxe would give you somewhere to go when you needed more power, whereas a Princeton is pretty limited in the volume department fr larger gigs where they are not putting the amps through the PA, that came up back then, but it might not now... things are so different at venues today). A good deluxe reverb (1980 or earlier) will serve you until you are old and grey and will deliver a lot of great classic rock tones from spanky 60s clean to Cheap Trick dirt and when you add the tubescreamer you can get SRV tones with a strat. It will also NEVER break and seldom need much in the way of routine service as long as you stick with JJ output tubes. Fenders just keep running and running. Old deluxes can be pricey though, so if you can tolerate more wattage I recommend the blackface bandmaster which is still a real sleeper and can be regular had for 600 USD or less. Maybe a bit more with the matching 2x12. I ahd one of those for a while and it was a killer American amp still running on all its original parts from '66. A little ahrder to overload at tolerable volumes, but even more of a champ with pedals than even a Princeton or deluxe, The bandmaster just inhales drives and delays. Fender heads from the 60s are still a vintage bargain for how great they all sound and how indestructible they are.
If I were you and I were going to abandon all ym current gear and start over I would probably get a Marshall 18 or 20 watt clone, a Vox handwired ac15 or 30 or maybe a Marshall Studio 15 from the 80s if I could find one for less than a grand (it happens, the Studio that I ahd was marked at $600 when I got it and I traded a Maestro fuzztone form the 60s for it flat out... but I sold it on ebay for almost a grand, so YMMV)