My Guest charger lost one of it's banks after 2 years, so I'm in the market for a new one.  It was only a two bank charger, which is what the Nitro came with, so I will be moving up to a 3 bank unit now.  I am looking at the Dual Pro Professional or Sportsman, so my question would be for anyone that has either to give me their thoughts.  I'm not sure if the Professional is worth the extra $100.00, but still undecided.  

I'm not totally against the Minn Kota, so thoughts on that would be welcome as well.

thanks, in advance

Most of what I know about batteries I learned here. Higher the amp charger the better. I have 2 Professional series chargers on my boat. A three bank and a single bank. I can say they charge quick and work flawlessly.

I vote for the Pro - I'm rocking the 4 bank - Love It.

A-Jay