Despite the current instability in the financial markets, I don't think cups can be regarded as a good investment regardless of the maker. The collectables market is pretty fickle and the bottom line is they're only worth as much as someone's willing to pay for them. There is no inherent 'value'.
Two cautionary tales from recent history:
Maybe 5 years ago, the price for a set of Paul Fox cups was in the $500+ bracket, and it wasn't unusual to see a set sell for $800. Now, most sets sell for around $400, except some of the rarer versions.
A couple of years ago there was a bidding frenzy in a Martinka auction for a set of Ross Bertram cups. The final bid was in excess of $2,000, a sum previously unheard of. Why? Because two people bid furiously against each other. The next set that came up sold for over $1000. After this, a few people put sets up for sale, thinking that they would get a huge sum for the cups...but the reserve wasn't reached. Why? Because the two guys who really wanted the Bertram sets had already got them.
I collect cups because I like the trick, it's history and have an interest in the way different cups look and feel and how they're made. I don't collect with a view to making big bucks at some stage in the future.
Having said all that, if you were to ask me which cups I think will be the Connie Haden equivalents in 50 years time...Nah, I'm not going to tell.
