You may get a better deal if you buy unsubsidized but stay with your current plan. You may need to first change some of the options on your plan. For example, I currently have a "feature phone" with $6/month 3G "T-mobile web" access. As far as I can tell, I can get the Nexus unsubsidized and continue with this plan. This would be substantially cheaper than $180 + $80/month over 24 months.