Grellas:<p>You mention the preference order as:<p>1) unrestricted grants<p>2) restricted stock at a cheap price with a timely 83(b) election<p>3) ISO, with low strike price and early exercise<p>4) ISO or NQO without 90 day tail on termination<p>5) RSUs<p>How do ISOs with a 90-day tail on termination compare?  If I understand correctly, those are the most common.