Goods and the bads.
Over the last weekend I used these mics in 3 different situations,
1 at a little Karaoke show, the mics were extremely good, picked up the vocals well, not crackling/dropping out, really nice.
2 at a 'bingo brunch' with two very excitable hosts, both mics were great, was easy balancing the volume between the two hosts (one was markedly louder than the other) simple to sort.
3 at Wembley Boxpark with a rapper and more karaoke. Handled a rapper set extremely well, handled a karaoke set extremely well.
Very happy with these mics, they are great for presenting, singing and announcing, for £200 I very much doubt you'll get better.