I'm considering a speaker upgrade from Lucid...the rear-panel speakers and front door speaker combo. I probably won't upgrade the head unit for some time. Any suggestions?

 

Diamond systems are excellent, the Kenwood are as well. IMO what i use and what i suggest is the 5.25" Excelon. It's the best value and makes the best use of power as well.

For door speakers you could swap out the woofer or go with a component system, drop a line if you have any q's