Stephen Marley - Mind Control is a great album.
Also check out Ziggy Marley.
Groundation is definitely a good one to look into.
It sounds like you might like dub reggae, so check out Laika Come Home. Super laid back Gorillaz dub remix album.
As for Sizzla.... Anyone who spouts out as many albums as he does is bound to have some good material, but I swear 90% of his music is just crap.
"yo style isnt about the clothes you wear and how they fit. it's how you move."
- Corey Vanular
"You're probably the best troll on NS right now."