Spectors are way tougher than you may think. I have over 500 shows on my 2 Euros. I am not a stand in the corner bassist. We are ALL over the stage, jumping, running and going in the crowd.
I have no doubts to how well built Spectors are. It's never been a question for me of if Spector build quality is comparable to Schecter quality, it's the cost of Spectors and my absolute reluctance to bang one up like will a Schecter that I am thinking. If I can get a lower cost but well built bass to get a tone similar/close to the Spector growl, I'm ok with that scenario vs brutalizing a Spector which to me is a work of art.