Diffs...

[GorillaMaxx360]

All right guys can you help me out with this one. I am going to get a decent brushless combo (quark 125 & good motor "Motor not yet decided") that will do anywhere between 40 and 60 max but probably around 47mph. I have been deciding what diffs to get. The people at Novak told me that I would not need to replace the diffs if I use the HV system, which does about 40mph. Now I know that I will not be using a HV system, but other people on this forum have told me that when I go brushless I will need to replace the diffs. Now my question is will I really need to the diffs, or will they last me a while with the brushless system. My next question, if I get better diffs what kind of diffs should I get. Most people have told me to get the 7.5 spider diffs from UE, some people have told me to get the FLM diffs, some people have told me to get the T-Maxx 3.3 diffs, and the rest of the few people told me to get Robinson racing diffs. Now I do understand with all the diff sets how they all just bolt in and your ready to go EXEPT the UE spider diffs. Now since these are so much more expensive than the others they must be considerably better "Right". Since the gearing ratio is different than stock how will I make up for the difference in ratio (Buy using different pinions/spur). Also how do I figure out the over all ratio, and what I want the final gear ratio to be. Will these spider diffs be faster or slower in speed, have more torque or less torque, or are they just indestructible, what is the advantage of buying these diffs over the stock gear setup (gear and cup). And is it really worth it to buy these for the high price that they charge.
Thanks for reading this long post and if you could answer as many questions as possible.

Thanks so much for your help:032: :002: :032: