Good question. It is not my confidence in my bass or it's ability, the fact I play it reflects that. I've got 30yrs experience & the prosperity of my band at stake - I wouldn't waste my time on a bass I wasn't absolutely confident in.
How good do I think it is? I've lost count how many times I've stated exactly that.
Truth be told, when I log off TB after a rather "spirited" discussion about SX basses I chuckle sometimes at how many people try to prove
to me that I can't gig with my bass or lay it down & sound just as good or better as if I had done it on my MIA Fender. All I can say is they are dead wrong. Whether they choose to believe me or not is their hang-up, not mine. No one's talking boutique hand-made basses, but a simple CNC'd bass is not exactly rocket science to replicate, yet I am amazed at the sheer volume of people who cannot believe that. Maybe that's a pill too bitter for them to take. Again, someone else's hang-up not mine. So as I said, I'm not out to prove anything, but I love to dispel BS every chance I get.