TB20 Build
In fairness all the TB20's I have looked at are club aircraft and have stood outside quite a bit but I have never seen one that doesnt have a cheap plastic dashboard and fittings.
There is no comparison between a Beech build quality (shockingly good for an Amercian product as most things they make are crap) and the TB20 but then you are correct that the price is also way more so we are not comparing apples with apples.
I like both planes and would be happy with either really but if I only needed 4 seats it would have to be a Cirrus I am afraid. Then again they are as expensive as a Bonanza!