Always be careful with cheap helmets,
I know not everyone can afford thousand dollar helmets but your head is one area that doesn't take lightly to hitting tarmac.
Some *** ratings are not actually legal, some cheaper manufacturers can get around certain things, might be *** rated in one country, but in another they might have much more stricter rules.
Sticking to the bigger names will always help to ensure a quality build!
Yea without a doubt the name brands spend much more time on running these helmets through all the tests to ensure they pass. And the designs on the helmets look much better too as PBR Co said