Condenser Mics for live use?

[Zhorell]

Anyone here have use a condenser "hand-held" mic for karaoke?
http://pro-audio.musiciansfriend.com/pr ... sku=270032
Or

http://pro-audio.musiciansfriend.com/pr ... sku=271596

I have a regular condenser and they're very sensitive and feedbacks a LOT!