JL AMP - MX4/500 or M/400

[justdriftin]

Looking for  new  amp for my 24TE.  I had a JL HX/280 that pushed 4 7 inch fusion speakers.  I upgraded 2 of them to JL M3 770s and then blew the amp when I putting a new battery in in the dark on the dock one night.  I will probably upgrade the other 2 speakers to the JL 7.7s as well.   I see there is a MX/500 now which is the simple block type for about $150 bucks less than the 4/400. I'm not so sure about the specs on the RMS etc for a 4 channel system.  But is the 400/4 worth the extra dough on this set up?  The old HX/280 was pretty good, could hear OK running but not great.  If the 4/400 would have better RMS with the extra 2 7.7s maybe worth it but looking for info.   Also concerned about amp draw on the battery.  I like to have music but its still a fishing rig and need to be able to run livewells and get back home at the end of the day. 

[smilemaker]

I would go with the 400/4. It will push the 7.7s nicely and if you upgrade things you can bridge it to get 200 amps to 2 8.8s.