I have right now a Jensen 760 Watt 4-channel amp and 1 15 inch Kicker Solobraic L5 that i bought off a person for 150 and they work great together but I was offered from a local car stereo place to buy a Planet Audio vx900D for like 600 bucks is the Planet Audio worth the buy or should i go and try and find a better one.

 

I'm assuming your l5 is dual 4 ohm. So that planet audio says 650 rms at 2 ohm, but its prolly a bit more. It is a very very nice up, it is jst up to you wether u want to spend that kind of money on an amp or not.