I'm finally ready to buy a mini. I've bought from apple's refurb section in the past and always been very pleased. With added tax by apple I'm not sure if maybe i should just get a new one. when available again, apple will sell refurb 2012 mini i5 for about $545 with tax. The mini is also available for sale at $588 at 2 other retailers who offer free shipping and no tax. should I buy the refurb or a new one for about $45 more?