Gday Jimmy
This topic can be a little subjective. As mentioned there are some really good companies out there, with prices that are generally competitive (with other resin manufacturers)
Some lack certain qualities compared to others. ie. accuracy, pose, detail, so it may help to tell us what you have in mind as a pose. This way people can draw on their own purchases or knowledge in helping you locate what you require...
Hornet are generally accepted as the best in regards to head sets (often used as the 'cherry on top' of standard plastic figures

)
Alpine as mentioned have a great range which is cast in beatiful resin to work with.
(his factor is not often mentioned, but some are made in hard brittle resin which can affect the clean up if needed)
Warriors have the biggest range that I know of.
Mk35 have some quite original stuff.
Nemrod great detail but relatively expensive
Custom Dioramics also a good range
These are just a few. Why not try
here Brad