Yep, it looks like Greece should be great fun, really starting to look forward it now as I'm going in just over two weeks!
I think some of the Figarti stuff looks very interesting - I particularly like the Vietnam figures they do as it's a period that's always fascinated me, and the relevant K&C figures were retired long before I ever even heard of the hobby. Again, for much the same reason, some of their current-day Iraq War line has always grabbed m attention. For the moment anyway, I'll have to remain with K&C, not neccessarily because I don't think some of the other manufacturers have very good offerings, but because dipping into other companies would probably kill my already very over-stretched budget!!
As to my favourite periods, seemingly like most people on the forum, there's very few aspects to military history that don't interest me to some extent, but if pushed, I'd say that Napoleonics and the Second World War would be my main areas of enthusiasm!
How about yourself, I already know you're quite a big WWII man - which theatres and campaigns within that interest you in particular??