Know anything about Kove Audio?

Getting my stereo planned out for my boat due in the next few weeks. The stereo shop is suggesting Kove Audio for the 6 6.5's in the tower and a Kove audio 12 inch sub. I am relatively edumacated on stereo equipment, but have had no experience with Kove. They will be powered by two soundstream amps (specific models below) Info on the amps would be appreciated (Sp?) also. I know they have been around, but I have never really heard them. My crew and I are Rockford junkies. I have the option to upgrade to JL or Arc Audio amps, but the dealer suggested that it probably isn't worth it on a boat because of the open air. He has been dealing with boats for 6 years now and he seems to know what he is talking about. Hey stereo guru's tell me what you think.

Model Numbers and Prices:
Sound Stream Amps
500x4
Pic 4.880 $475
400x2
Pic 2.320 $284

Audio Kove Speakers
1 12 inch sub
XK12 $163
3 sets of 6.5 coaxials
XT6.2 $300

Deep cycle Battery and selenoid
$190