I would go with the Fletcher. Actually, if you buy tools from HS
walsh, (which, they're very friendly and will explain anything to
you!), they sell a crucible with a holder, which is quite economical
(about 15 UKP), the product code is TC146. I've used it before, and
you can get a couple of different size crucibles that fit in it. I've
used the small size one to melt about 20g of silver, and it hasn't
been full. It's good, especially if you're torch-melting your silver.
Just my two cents worth :).
Robin Cassady-Cain (UK)