RE: What buggy to get
i run a k3 with everything on it : all the hop up are carbon fiber or titanium.
airtronics 94359 steering and 94360 throttle, mx8 radio tx rx + failsafe
engine: os vz - b spec 2 - great power and very easy to tune i keep up with the ws7ii on my track off the line and in the strait.
i had an s2 eb4 pro it was great i used to get 4-6 place and with the k3 same lines i an 1-3 all the time
again if you got the driving figured out then go for the premium hardware. and if you get dealer prices the choise is clear.
my car set up is the most common with pros. from mr k himself to most of the top 10 in the world.
ps. the mugen is a fast buggy but i think that from the box the k3 is the buggy of today.
ps2: i am waiting for the new buggies: kyosho 777. eb-4 s3 (looks amazing .......) ( if someone knows what is coming out soon please write)