Blessing Of A Silver Ring Which Purity Ring Should I Get?

Which purity ring should i get? - blessing of a silver ring

Purity ring is very important to me.
My brother is a priest, so I will ask him to bless me.
Only problem is that there are not my purity ring, not yet.
I do not know what to choose.
Please help me.

http://www.amazon.com/True-Love-Waits-Sterling-Silver/dp/B000W966IO/ref=sr_1_1?ie=UTF8&s=jewelry&qid=1249886188&sr=8-1

http://www.amazon.com/Eves-Addiction-Waits-Stainless-Purity/dp/B002CSGIPY/ref=sr_1_6?ie=UTF8&s=jewelry&qid=1249886188&sr=8-6

http://www.amazon.com/Eves-Addiction-Waits-Stainless-Purity/dp/B001ORGYV2/ref=sr_1_5?ie=UTF8&s=jewelry&qid=1249886188&sr=8-5

http://www.amazon.com/Platinum-Plated-Sterling-Silver-Sentiment/dp/B002GSYUZU/ref=sr_1_11?ie=UTF8&s=jewelry&qid=1249886188&sr=8-11

Thank you for your time