[Sneeck]

For the money, go 8 spyder. The diff cup is alum, with the 6 spyder it's plastic/ nylon. Price diff isn't that much and you'll get a much stronger diff that will never strip.

Titanium cvd's is a very strong no no. Ti will wear so much faster than rolled heat treaded steel. Stick with the 6mm's and you'll be fine.

UE is the best you can get. Look at their racer x and compare it to integy very cheap knock off. Quality is expensive, but it also is very very strong.(unlike the integy version from all the story's i've heard)

If you plan on going big block brushless(wow that sound's sweet) i'd suggest yes. It is so smooth, set it and forget it. No other diff set-up come's close to being so maintanance free.