Mbritt and Tonejunkie for country / rock / low keyed stuff.
Metal stuff is reaaaaally all over the board for regarding your personal preference. I really like the Josh Middleton Tones packs, Sin Mix, and Reampzone. The Get Good Drums Kemper pack is probably the best for really modern metal / djent type tones
Also --- join the Kemper forum (lots of free stuff up there by makers / people profiling) and also check out rig exchange (very, very hit or miss but check out the well reviewed ones on there).
Alllll the profile makers have freebies on their sites, etc... Definitely try before you buy