[RC-Monster Mike]

I just picked up FastLane as a vendor a few days ago, and I haven't gotten the opportunity to try all their products yet. I try to try everything I carry so I can speak intelligently about the parts and help my customers when they need it. The diff cups are a nice price, but I still have the maximizer diff cups in stock, which I have had very good experience with, even though they are a bit more costly (they are 7075 and the fit is excellent). I did have a fitting issue in the past with a Fastlane cup, but Jamie replaced the cup without a hassle.Personally, I don't think the Savage diffs are much stronger, if any stronger, than a properly shimmed, aluminum cupped and cased maxx diff. I have seen quite a few blown savage diffs., but I have been running brushless power through my Maximizer diffs for a couple years without failure (I am also a user, not an abuser). As for the bulkless, I may stock the hybrids at some point, and can certainly get them upon request(along with any other FastLane part). The cost starts adding up fast when you try to get things in stock, so I will build as the budget allows. The UE stuff is very nice, but also VERY expensive, for sure.
The stock gears in an aluminum cup (need 3mm screws) and aluminum cases, when shimmed properly, are very strong. If you don't make a habit of landing on power, they will last a long time even under the kind of power you are speaking of. If you jump high and land on power, something will surely give! The 1/8 diffs are very nice and pretty much bulletproof, but are costly. If you aren't an abuser, you won't have any trouble with the aluminum cases and cups with stock gears.