help a girl out

Taxes are filed and our refund is on its way...that means Nic and I will be getting a nice mid-year bonus (after a majority of the refund is put towards our basement remodel project).  So the big question of the week is, what should I get??

I am thinking of getting a Garmin Forerunner...but which model?  The 305 or the 405?

I know not that many people read this blog, but if you are reading this and if you have any suggestions, please leave a comment!