If I had easy access to a variety of blends I'd always sample this and that to some degree, but I guess I'm trying to plan ahead for the scenario where I'm faced with a dearth of options. It's then that I'd want to be well supplied with my favourites rather than "flavour of the month" type blends.
The only thing I find about sampling a lot of tobaccos is that I have way too much open at one time, and their freshness is probably suffering even though I have them sealed up in jars. Rehydrating them is fine, but there is probably some flavour that is lost during that process.