I have had my Nexus 7 16gb for two weeks. Got it for a steal on Craigslist! It is around my 20th or so android device. Most have been successfully rooted/optimized/romed. I have sent a few Motorolas, HTCs and Samsungs into a state of bootloop or brick (always successfully recovered however).  A few I chose to leave stock (due to the fear of not being able to replace them on warranty). This one has no warranty and the ease of obtaining the oem image from google makes not rooting it just not add up. Anyway.... I will be using the Nexus 7 Toolkit shortly to run the exploit and gain root access. No sleep tonight!!!