[Finnster]

I have had a Erevo (2 diff nitro conv) for over two years, and a Savvy XL for the last several mos. The Flux looks like a XL spec Savage X made BL.

For the money, the Savage is a much nicer and beefier truck all around. The XL dogbones are huge, the TVPs are strong, and everything is easily accessible. The diffs are strong, are 6 gears in a alu cup, and if somehow you are breaking them, Cen Genesis diff will fit, which are super heavy duty w/ massive teeth. The Revos are small 4 gear setups in a plastic cup. The Savvy has easy access diffs.
The revo, esp with the plastic sliders requires nearly a total dissemble of the suspension to get at the diffs. IE remove bumpers/body mounts, 3 thru pins for sliders, rockers and/or pushrods and shocks. Then, due to the 4gear design, insanely heavy oils need to be used to tune the diffs. The shock ends tend to pop off easy, and must be upgraded. The steel pushrods and turnbuckles bent easy for me, but the 7075 stuff, or Ti rods worked well. Arms break often enough as well. I've bent a number of the steel rocker posts. Sliders stretch out and the TRX Revo CVDs are garbage. Needs an alu str arm w/ single servos. I hate the pillow ball design, and they've popped out a number of times (tho I understand revos now come with steel retainers to help w/ this.) On the upside, I've never broke a body mount nor a bulkhead, bumper or bent the chassis. Overall its a reasonably durable truck, but does slowly widdle down the wallet w/ constant little breakages and needed upgrades.

The savage tranny can be opened in 7 screws, 4 on sides and 3 from top, and leaves dogbones and tranny bottom half in place. To open the Revo tranny: 2 thrupins for sliders, 4 for the skid guard and tranny mount, completely removing tranny, then at least 6 for the case to open. The Sav sounds like not that many less screws, but they are all together and very very easy to get at, and the top of the tranny case then just plucks out. You don't even have to pick up the truck. The revo is flipping it over, pulling stuff apart, jimmying out the tranny, and then having the whole thing come apart. Now this is the two nitro trannies, so YMMV, but the Savage has metal gears, while the Revo was plastic, and I shredded the plastic gears often enough.

Lastly, shocks. Beyond what I already said, the revo shocks are a pain to tune. They are too small IMO, and even the heaviest springs are a bit soft. I used the silver long travel springs, and the butt was still saggy. They are a pain to remove as well compared to a more conventional upright design. OTOH the Sav has BB shocks, and can be made to use truggy shocks or even the massive LST shocks. There is more shock oil in one LST shock than all 4 GTR shocks of the Revo.

Yeah, the revo will out handle a Savage, but a truggy will out handle a Revo... but all depends what you want to do with it. The savage is a proven hardcore basher, and I have been able to drive thru rough stuff I was sure Id get stuck in, but the XL keeps going. Like a field of 18" high grass and shrub. Just powered thru and kept going. W/o a doubt my Revo would be stuck. The Revo is pretty good once you upgrade a number of things, and are willing to live w/ other stuff. Savage racing? Eh... but really having a part time basher and racer is hard to balance. To be a good racer it needs to be setup right for the track. That isn't necc good for bashing (like a low ride hieght and soft shocks, etc.) Do you really want to be changing it back and forth all the time, or if not, do you want to take your nicely tuned racer out to a construction lot and start jumping it, crashing into ruts and rocks, and generally abusing it? Prolly not.

Not trying to bash one or the other, but I've had quite a bit of experience between the two (esp Erevos) and just giving my honest critique.