[lincpimp]

Lets look at the dual velineon setup compared to a 7xl and 4s system, cost wise. I have left the stock 32p spur, and geared both for around 40mph top speed. Figured that a pair of 4000 3s lipos would do for the velineon setup, and a pair of trakpower 2s 4900 lipos for the 7xl setup:

Dual setup

2 velineons systems $340
2 venom 3s 4000 lipos $240
2 22 tooth traxxas pinion gears $6.80
total 586.80

Single setup

7xl feigao motor $80
Mamba Max esc $135
2 trakpower lipos $240
cc bec $22
24t RCM 32p pinion $12
total 489.00

Most of these items can be sourced cheaper than what I have listed, but there will still be near $100 difference. Plus the single motor setup will be lighter and simpler than the dual setup, both in battery and electronics weight. Runtimes will most likely be similar to, My vxl rustler on 3s 4000mah lipo did maybe 25 min, where my 7xl 4s 5000mah terror did more like 30min, and was geared for 45 mph. This is just for cost comparision, but I would prefer the lighter weight setup myself. That being said, I have a pair of hacker c50 maxx motors and 2 mm escs that will go in my new emaxx, just to test the strength of lst/aftershock diffs!