I use 2 XPS - 2 bank 5/5 chargers from BPS for my 4 battery setup....they do fine for charging overnight....

If I'm not mistaken one of your questions was about a three day fishin trip where you wouldn't be able to have an "overnight charge" in between fishin trips.....

If you think that you would be in that situation, then the quicker recovery time might be more suitable.....

Some of the other guys are more versed in the numbers of amps vs recovery times vs wear on batteries.....