One bass to rule them all? Entirely possible. I have been playing the same DB for the last 20 years. Yes, others are nice but I do not have any DB GAS.
Mr CT, if you fancy a Bravewood or a 2nd hand CS then just do it. The new Bravewood will hold at the very least 75% of it's value and the 2nd hand CS will hold 95% of it's value. If you get one and then 2 years later want a change, so what?