I order one due to all the buzz around Sire basses.
Build quality is overall great, except fot the knobs of the stacked potentiometers. When you turn the bellow ring it also turn the top knob, and the other way around. You can pull a bit the top knob and it get better.
I don't like the new top rounded neck, it fill more confortable at first , but the string tend to too easilly slip out the neck.
I don't like the sound rigth away, very hollow. After changing the string and setting up the neck to my preferences. It was better but not great.
The tonal range is not that wide, it's wide when you use active electronics.
I have the same tonal range with my Squier CV 70 with Seymour Duncan Quarter Pound. I don't have the fintuning, but I can get from brigth sharpe sound to dull dark sound. Which is fare enought for me. The rest is in the fingers.
I test it on my SWR Red Head Combo, and never manager to get a sound I like. I try it on my small Markbass 801, on which it sounds better.
After trying it for a small week, I decide to send it back.
Of course this is my own opinion.