That one looks like crap. It's low-voltage and the wire size is really small. That tells me it doesn't have much power so it's probably easy to bog.

I have a cheapo one from HF too, but it's 110v

Mine's not bad... but not as good as a real dremel for sure.

 

no, i have one air angle grinder which was the first one i bought, Then i picked up a cordless craftman that was a 2 speed but it was too slow so i returned it like 2 months after (90day thing for sears) and i was just going to run the air grinder but i found the wynn plug in one and i rolled with that.

I have the air grinder that i normally use to polish off rotors and brake parts, my electric wynn that i do interior stuff for and a air CUT off wheel to take care of rusted bolts.