I think the amp I’ve enjoyed most has been the Eden WT series, the 800 & I currently own, and probably my third owned, is the WT550.
For versatility I miss the Carvin BX1500 that I’ve sold on, loud, clean and just all round greatness. The Blackstar Unity 700 is also a fantastic and versatile amp.
The amp I’ve probably used the most over the years is the Orange OTB and I really liked the baked in sound, despite lack of versatility (IMO).
Although trusty Markbass is what I always come back to with my favourite being the Little Mark Tube, to which I currently own.
A shout out to the Genzler Magdalen too…that was a beaut with fond memories. But despite the weight of my Eden WT550, that is the deal!