Reply to Headphones for DJing/Producing

I was looking to buy some headphones for doing some DJ/Production work when I stumbled across an old pair of Vic Firth SlH1 Isolation Headphones. Would these be a good choice or should I actually go out and spend my valuable shekels on a new pair to use?

http://pro-audio.musiciansfriend.com...nes?sku=443954
Link for reference