What mods packs are out right now that are lite and yet still very fun?

(First off yes go on I know one of you will mention GregTech get it out your system. I'm not doing expert packs since I'm NOT A EXPERT.)

NOW what mods packs are light on the system but VERY fun and still give long term gameplay?

I'm looking for light packs that go from Skylock Like to Kitchen Sink.