+1 to visit a club but as a fairly new bod myself here is my take.
Loads of great 10th buggies available in 2 and 4wd. Popular cars where I race seem to be:
2WD
Kyosho RB6
AE B4 variants ( for astro and carpet you probably need a mid conversion like Vega or Centro)
Durango DEX210
Losi 22
Schumacher SV2 Cougar
4WD
AE B44.1/2
Durango DEX410
Schumacher K1 CAT
Couple of Tamiya 502 but very pricey
Batteries are all Lipo for racing now, I use Orion and my son uses IP both great. Huge capacity compared to NIMH with 20+ min run time easily achievable. Three main shapes, stick - a bit like the old NIMH size and shape but more rectangular. Saddle packs - like a stick pack cut in half and usually fitted one each side of the buggy for weight balance. Shorty - the newest size, a full capacity in a 2/3rds length stick pack mostly used in 2WD I belive
Motors are mostly brushless now. Means no more servicing, no more tweaking, no more brushes, no more commutator lathes. Fit, forget and drive really fast. Still use number of turns to label the power, very roughly about half the number on a old school brushed so a new 10.5T motor is similar to an old 23 turn and a new 5.5 closer to an old 11 turn brushed. They are also measured in KV which is number of RPM per volt ie how fast it will spin.
Radios are now mostly 2.4Ghz with no crystals, no conflicts just switch on and go!
HTH
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