Here are a couple more that are top notch as the ones mentioned above
http://www.mp-molds.com/ This guy makes great two cavity hollow point Cramer type molds and some come with 5 sided pines which are reversible to make flat points or turn one around and make one hollow and one flat point.
I have a couple and they are great with a couple more on order.
Another is NEI
http://www.neihandtools.com/ I have many and they all work well Aluminum and Iron.
And another is CBE
http://www.users.bigpond.com/JIM.CBE.htmor
http://www.castbulletengineering.bigpondhosting.com/I have a couple big ones from him a 975 Grain FPGC .512 and they are also good molds.
Here is another one
http://www.magmaengr.com/ magma ENG.
Very good iron molds ,they cast like a dream ...
And still there is more this guy at Night Owl Enterprises makes great custom molds .
I just got a 4 cavity 850 Grain FNGC .512 and casts great.
I also have another .512 coming 500 Grain 4 cavity with one cavity a hollow point , drooling for that one .
He can be contacted at his email address here Pbsco1@qwestoffice.net
Here is a picture of one of NOE molds
Save your pennies .
RR