Yes, I think you're right Nick thinking about this more but specifically when buying new.
The initial hit is pretty huge (hence the general advice on here to always buy a second-hand big name outfit that someone else has found is not for them or was seduced by at a glossy boat show) and let them take the hit. Certainly once past that *initial* huge loss the big name is always easy to sell and tends to settle at a certain value and stay there. I'd never buy a brand new Zodiac at the prices they ask.
I'd point the OP to the 'SIB's spotted on eBay' topic, especially lately, for the incredible bargains you can find.