I am seriously considering this charger and it is on sale.

I have two Interstate batteries (SRM 27 and a 24M XHD).

Any thoughts?

ProSport 12

http://www.cabelas.com/cabelas/en/templates/product/standard-item.jsp?_DARGS=/cabelas/en/common/catalog/item-link.jsp_A&_DAV=MainCatcat602006-cat130009_TGP&id=0019015015766a&navCount=17&podId=0019015&parentId=cat130009&masterpathid=&navAction=push&catalo&cmCat=cat601333_feat&_requestid=5657

It's made my ProMariner for Cabela's.  Strickly from my point of view, ProMariner is the only onboard charger I would ever consider using and all I have used for about the last 10 years  Granted, it's not the same charger as the ProMariner Pro Tournament models but, they have everything you need in a small charger.  Also, as I've mentioned many time before, just because it's only listed as a 12 amp, it really performs as much bigger charger with their on demand technology.

It's made my ProMariner for Cabela's.  Strickly from my point of view, ProMariner is the only onboard charger I would ever consider using and all I have used for about the last 10 years  Granted, it's not the same charger as the ProMariner Pro Tournament models but, they have everything you need in a small charger.  Also, as I've mentioned many time before, just because it's only listed as a 12 amp, it really performs as much bigger charger with their on demand technology.

I also have heard good things about this one from Dual Sport:

http://www.dualpro.com/new/lp2.html

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I have a DualPro 3-bank that has run now for 8 years, 24/7 (except when I was on the water), and it still going strong.  I wouldn't consider another brand.