I've started the RC world again after 20 yrs. I started back with ⅛ ebuggy so my knowledge of capacitors on 1/10 buggies is almost non-existent. Can someone tell me the difference between the ones you plug into receiver and the ones you solder on at the ESC? Some how I don't think they are doing the same thing.

The cap that you solder onto the ESC is to protect it from voltage spikes. Many of the high speed servos used today draw enough current to cause the receiver to "brown out" or glitch. So we use a "glitch buster" cap to keep voltage constant to the receiver, even while making a hard turn.

Thanks BUbbaslah! So what is the one you plug into the receiver for? Same thing? Either one of them will do the same job? Sorry, I didn't get the difference from your answer.

The glitchbuster is what plugs into the receiver to prevent servo glitches. (problem with savox servos/Spectrum radios)

the glitchbuster type is what plugs into your receiver , it stores/smoothes out energy at the receiver to help from "glitches" caused by low power and/or spikes. the caps that are found built into the esc or wired onto the esc at the battery posts of the esc smooth out frequency ripples - kinda basically the same thing as the glitch buster on the receiver but different. yes i only know enough to be mildly dangerous. i run both , and i do honestly know from my own use that a glitch buster helped on my receiver to cure a random split second weirdness in my sct's handling. ive read on here to always run caps on the esc if the esc came with them new. ive also read about good results of others adding additional caps.

The primary difference is that the caps that go on the ESC need to be "Low ESR" (Equivalent Series Resistance). You can use the Low ESR type for the receiver cap but they are generally more expensive (than ones that aren't Low ESR) and are not needed for that application.

The ones that I seen are 1,000 MFD ones.
They REALLY help if you are having glitches.
Most new ESC's come with them now.