Batteries AGM vs Acid

So I was shopping for a new battery and saw that interstate now makes an AGM Group 65 for about 60 bucks more, $120 vs $183

I see that the CCA of the AGM is a little lower as is the CA and the RC but doesn't state the AH of the 65N. 

   So I'm wondering in a warm environment like the ski boat (where CCA isn't quite as important) are the benefits of the AMG worth the extra coin?

I'm thinking not, just wondering what others that may be more astute on these things think. 

   

Regular 65N specs.

Item Number	1624302
Group Size	65
CCA	850
CA	1000
Voltage	12
RC	150
Length	12 1/16
Width	7 1/2
Height	7 9/16
Weight	46.4
Termination Code	TOP
Wet/Dry	W

AGM specs

They are small, compact, light weight (@26#) and have never failed.....so far

AGM batteries have the ability to take a much faster recharge, you can charge them at 60 AMPs and they like it,  our boats typically do not put out the AMPs to do this fast recharge so you give up one of its abilities.  Standard batteries prefer a slow charge if you want them to last.   They also have the ability to provide full voltage right up to the point where they fail.   Standard batteries tend to get weaker as they discharge. So with a standard battery you know when they are getting weak while with an AGM it will start at full power and maybe on the next start be full dead.  So far less warning signs.   Not so good in a boat.   So the types each have advantages and dis advantages choose which you prefer.

I asked the battery engineer on staff why I was getting short life from my boat battery, he asked how big a battery I was using, I replied the largest I could fit.  He laughed at me.  Said the larger and heavier batteries squeaze larger leaded plates inside to hold the extra charge.  Because they are larger they are closer together in the box.  This allows they to touch in the vibration they get in a boat causing failure.   He said put in a lighter duty battery and it will last longer.   So I went from 900 AMPs to 600 and it lasts much longer and cost less.