Update:

Keeping every advise in mind (thank you!), I settled for Philips SHE7600 which cost me $18 CDN on sale from Wal Mart. Regular price $20. The frequency response range is 8hz - 24000 hz.
http://www.p4c.philips.com/files/s/she7600_00/she7600_00_pss_eng.pdf

They had Koss and Sony too but the price scared me off. I will use it for a week to see how I like it. If I don't like it, I can return it for full refund within 90 days.

I am excited. I am expecting better results - even if just in the form of meditation if not more.

Thank you all.