Need advice on which model for a kegerator

Hello,

Long story short, I punctured the refrigerant line on our existing kegerator and am looking for a new one.

Currently, we run two insulated lines from the kegerator in the storage room thru the wall and into two separate taps mounted in our basement bar. The lines also run up and out of a tower mounted to the top of the fridge. I would like to maintain this system with the new fridge, but I am looking to size up a bit. Fitting two sixth barrels into the fridge required duct taping the door shut, which I want to avoid having to do. Thus my search for a fridge landed me on two models:

Kegco HBK309S-2: $681 on Amazon

and

Kegco MDK-309B-01: On sale from $1,110 to $609.58 (45% off) direct from site

I think the amazon one would suffice, but I am caught up on the the $500 sale of the other. Is it definitely worth buying the heavily discounted one?