I have two main amps that I use, a MarkBass LittleMark 800 Tube and an Ampeg PF-500 Solid State.
When we’re talking tubes and bass (for me) it’s all about the pre-amp and shaping the sound.
For me, my go-to amp is my Little Mark. There is a tube pre-amp that you can mix with the solid-state pre-amp and tweak your sound the way you want it. It is a little warmer, perhaps not as ‘crunchy’ when I’m mostly in the tube pre-amp. I usually keep the mix about 75% Tube, 25% Solid State.
But in terms of the Power section, both the Ampeg and Little Mark are essentially the same as Class-D amplifiers (or variations on the theme for most bass amps nowadays). You get that punch, high efficiency and small sizes. And even though the Ampeg is ‘only’ 500 Watts, it’s still loud as can be. I’d be hard-pressed to go to an amp with a tube power section (maybe if I could get my hands on an old SVT, I’d change my mind 
) In terms of price, I bought both of them used. The LittleMark was just south of $500 (great deal, IMHO) and the Ampeg was $249.
What I think it would boil-down to for you is the tone you’d like out of your amp - and you already know what you like. I really, really like the tone of the LittleMark. The Ampeg has a great tone, too. I tend to use a lot of effects with that one, so I don’t need it’s natural tone to be great. Again, it’s not bad at all, just not what I get with the MarkBass.
I would say try an amp with a tube pre-amp and see if you like it.
And for me, both the Ampeg and the LittleMark cut through the mix pretty good - which I think would be a big concern in the long-run as well.