Does anyone have a recommendation for chocolate molds,
specifically for bar molds. Plain, undecorated bars would
be fine. Googling gets tons of hits for companies selling molds.
I'm more interested in feedback from people who've used
molds and know what is good or bad about molds or the
companies that sell them.

The first company I went to, tcbsupply.com, has a 2-cavity
bar mold for only $2 that looks like it's a good size and
shape for me. The fact that they also sell wrappers that fit
the mold is a big plus. But I know nothing about molds.
I'd be perfectly happy to pay much more than $2 for
a mold, if it gets me a feature that is useful, like a
non-stick coating.

I'm thinking about doing some experiments in chocolate
blending and formulation, just a few hand-tempered
and poured bars per batch. Not a commercial operation.