[catinsocks]

I have a RMBP13" from late 2013 and it depends on what you are going to do.

My VMware Fusion linux image has the option to use full retina resolution which doesn't work well yet because linux isn't really up to par on dpi scaling, but it also has the option to use the faux resolution 1280x800 (or whatever it is) which comes out looking a little blurry but okay to me.

If you still have your ultrabook you can look at this image at it's normal resolution (not scaled by the browser) and see what the blur looks like http://i.imgur.com/QDdoWNM.png