Little bit of Savage and CRT experience here.
First, the savage was a beast and a lot of fun, but yes, difficult to work on. With the twin vertical plates, you basically have to take off an entire side to get the front, rear, or center out.
I had a bit of drivetrain trouble with mine (spurs, slipper pads, driveshafts) but I raced it hard and had a hot motor in it. They are very tough, great parts support, and lots of hop-ups.
I've heard, and seen proof that, the first LST's, have some problems. The thing looks great, but some general flaws. However, the LST 2 is coming out soon, with many fixed problems and upgrades.... maybe a good option?
Then there are the truggies. WOW!!!! I got my jammin about a month ago, and LOVE it. The thing is tough, and they are built on race proven buggy principles. No shifting, no gear reduction, just raw power and 3 diffs. That was a major headache for me on the Savage, the two speed. It's cool to watch them shift, but they are hard to keep tuned just right, blow up, and don't always work.
Even nicer is having a lighter truck that spools up quick and never stops, my jammin easily has the top speed of the savage, but none of the tranny problems.
Also, MTs tend to wheelie (a good trick, but it can be annoying when you're always chasing down a turtle on it's back) whilt the truggies are the right shape to keep everything planted.
Which brings me to the next point, your RTR. HPI and Ofna will both have RTR versions of their truggy out soon ( I think both before xmas?), HPI being the Hellfire (www.hpiracing.com
) and the CRT RTR. They both come with .28 (4.6) motors (i believe) so there will be plenty of grunt and speed.
Another truggy (i think the first purpose built kit) is the Hot Bodies LSP (Lightning Stadium Pro) which comes in pro style kits or RTRs. Thunder tiger also has one coming out, but I don't know anything about it.
Decide what you want to do, bash or race/bash, then go for it. Whatever you get, it will be fun! Hope this helped!
(Oh, and my wing is still doing just fine!)
Hot Bodies LSP