yah thats a tough one. trying to find the best possible 5 dollar mic. hmm id have to say the first one sounds/ looks a little more solid than the other one.
and as a bonus "sure" is in the name , ... i meen were can you go wrong? its gotta be quality right?
but if your tight on money and you want to try it out(as long as they have a return service), its only 5 pounds might as well.