Hey all, thanks a ton for taking the time to post responses. I ended up going with an icharger s6 and I'm going to DIY a power supply for it. After reading the posts here, I did a quick dive through the manuals of the S6, DX6 and M6D. I should have done that originally before posting... derp. At any rate, I was going back and forth between the DX6 and the S6 and I made the decision that I'd rather have 2 separate chargers for the redundancy advantage instead of a dual charger if/when my racing program picks up enough to warrant 2 simultaneous charging solutions. Right now, I have a rather crummy imars ac/dc that will be the backup and get used for the occasional vintage/basher that I run for fun while at the track. I may eventually roll the dice on an M6D as a backup/secondary charger.

I'm not going to mess with stupid high charge/discharge rates to pre-condition the batteries. I went for the s6 as protection, in case my mind changes on that, but I don't like the idea of battery tomfoolery and initially, I'd rather be battling mid pack then @#$^ing around and finding out. I've got a long, long way to go getting back in the hobby until the last 1-2% of performance is going to be what decides what place I finish.

Again, thanks for taking the time to lead this dumb ass horse to water to watch it drink.