My main gigging bass is a Revelation P bass in white. I spect I would like a better quality bass at some point but in the meantime I upgraded that which needed it: pups to Bareknuckle 58 split, tuners to Gotoh lightweight, loom to KiOgon.
Now that's done I can't find much I dislike and it keeps on coming back as my go to bass. I even sold it once and found it back on the doorstep after a few days.
The only issue you should check on the Revelation is the placing of the side dots. I had Bass Gallery check and all mine were on the notes except, bizarrely, the 12th fret pair which needed relocating by a centimetre.
I dislike mwah intensely so have my nut slots at 0.3mm and the action and relief same as a standard fretted bass.
Why do I play unlined? Honestly? The buzz I get when people go 'oo, ah, look he's playing unlined fretless'; the fact that 'oo ah' mitigates criticism of my usual playing errors; the buzz I get from creating my own notes, as against the 'paint by numbers' tin ladder system. I have got a fretted six, not least because chordal work up the dusty end of an unlined is really hard, but for down and dirty gigging I like the Revelation.
I have had a Portamento 5 and liked it very much. However the stub lines can give people the impression you're trying to look cool while still keeping the cheat sheet. One of our guitarists said as much to me: go commando or don't, but don't pretend you're naked while still wearing a thong. But hey it's a great bass and I will likely get one again when our guitarist isn't looking.
If you like cheap, you might stumble across a Vintage V940FL. Very wood, small, light active PJ. You might want to upgrade quite a lot of stuff and and move the side dots, but you can find them for around £150 or less.