B-550FL BK Progressive Series : Nice fretless for very little money

I bought this bass for practice and gigging with a live band. I am quite happy with it.

Pros:

The neck feels very thin and light: easy to play.

Bass is lightweight: My back and shoulders are happy.

Active electronics can be turned off. This is good, since I don't need the active eq.

Cons:

The thin neck is not very stable while playing, as it resonates quite a bit when low notes are played (the lowest octave of standard 5-srting tuning).

The body contour is not ideal for resting my right arm.

The metal hardware (bridge, tuners) feel a bit flimsy. But they have been ok so far. One tuner (A) felt quite stuck, but mineral oil spray fixed this.

The fingerboard wood is way too soft for roundwound strings, and this will result in heavy grooves on the fingerboard where strings contact wood. I ended up coating the fingerboard with super glue (cyanoacrylate). This was quite laborious, but solved the problem.

My other bass, fretted, is a 2000€ Warwick. The difference in quality is noticeable, of course. But still I feel that this was a nice buy. You get what you pay for.

Update after a couple of years:

Two tuners out of five have failed by now. First the tuner hardware started to fee stiff, then the mechanism just broke. The bass is not usable now, before I get a new set of tuner hw.

Also, the thin metal chassis of the monorail bridge hardware parts is showing signs of fatigue, and it is starting to bend.

Therefore I lower my quality rating to 2 stars.