<p>I would cross 1 and 5 off the list. To me, they just don't seem right. They don't focus on who you are and what you can do, but rather focus on what you aren't and can't do. Do you get what I mean?</p>
<p>I think 4 and 6 sound like the strongest and most personal. I'd go with one of those. 3 could work if it's well-written and not too generic. And I actually do like 7 - it shows a different and unique aspect of your personality. I think it could actually really stand out in a good way (if you write it well).</p>
<p>The others that I haven't mentioned are so-so, but I really would do 4 or 6. Maybe 7.</p>