Most of the toys use circuit boards to consolidate the electronics, which means you might have issues that can't be fixed.

Hobby-grade vehicles make use of individual parts that can be swapped, fixed, upgraded, etc. This also mean better trouble-shooting and repairing.

Also, lots of folks disregard posts from people who don't make an effort to punctuate, use proper grammar, etc.

You refer to a 'boot' sale in your post. Is that the rear of a car?