Hi all:
One of my spring time projects this year will be to upgrade my WFCO (factory) converter/charger with a better unit. I run 2 12v batteries and want faster recharge with better long term battery life. I am running regular lead acid flooded cell deep cycle batteries (group 29's for a little more capacity but still fit in the group 27 boxes in my unit), not $900 battleborn lithiums, etc. I am looking at going from the "factory 55amp" to something beefier and also with reliable 4 stage charging. So... I don't want to spend an absolute fortune so manufactures like Xantrex and Magnum are OUT. It seems like cost wise I am finding the following:

-Iota DLS-75 with outboard IQ4 smart charge controller cheapest (under $150)
-Boondocker/Powermax 1275 (Under $200)
-Progressive Dynamics 9270 ( $225ish)
-Iota DLS-75 with internal IQ$ (Under $250)

Is any one better then another? Anyone with personal experience on them? Am I opening myself up to a "what truck brand or tire is better" thread? I am tempted to go with the cheapest option (DLS-75 with outboard IQ4) but could certainly be talked out of it with decent backing info...

Thanks in Advance
Jim