Domain Renewals - Help Needed - GoDaddy Coupons Inside...

I have a load of domains to renew at GoDaddy and need to know the best way to save some cash... I found these coupons that have been advertised as working for september:

cjc749fat - $7.49 .COMs (exp 9/30/09)

cjcfat30 - $5 Off w/ $30 Purchase (exp 9/30/09)

cjcfat50 - $10 Off w/ $50 Purchase (exp 9/30/09)

cjcfat75 - 15% Off w/ $75 Purchase (exp 9/30/09)

cjcfat10 - 10% off any purchase (exp 9/30/09)

cjcfat20h - 20% off Shared Hosting (exp 9/30/09)

OYH7 - $2.50 off / $7.49 any .COM (renewals too... just used it)

BTPS101 - 20% any order of $50 or more

BTPS111 - 10% off anything

BTPS255 - 25% off $100 or more

OYH5 - 10% off whatever

OYH6 - $5 off a $30 purchase

OYH20H - 20% off hosting

chill5 - 10% off

chill6 - $5 off $30

chill7 - $7.49 .coms

hash5 - 10% off

hash6 - $5 off $30

hash7 - $7.49 .com registration

gdd1101c - 10% off any order of $40 or more

I also heard DNF2 and DNF5 should work for .com renewals at $7.49. I had a domain savers club and similar schemes recommended too has anyone tried? Does anyone have any decent codes that work. Tried a ton that didnt. I have approx. $200 of domains that need renewing ASAP.

Would love any tips anyone has. I am sure there are some sneeky tips like there was one regarding clicking an ads3nse ad. Surely there must be some sneaky ppl that know how to save a few sheckles @ godaddy.