I have loved Han Solo ever since the YT-1300 came out (okay I loved him a long time before that, but you know what I mean).
Ever since the first time I played with him with Luke Skywalker as his crew member I have just loved it. Of course now Han is so popular we have a whole build named after him, HSF. But it basically just means Take Han he is awesome.
I have found that the key to playing Han is to play him defensively. Take the Falcon Title card and evade every action. Also do everything in your power to stay away from as many enemies as you can. Ideally you only have to face one TIE at a time. (you have a good chance to kill it before it even gets to shoot.)
Since my first games, I usually take a gunner instead of Luke (I have the Slave I ship now so I can). But my most recent discovery is the Flight Instructor. Since Han is pilot skill 9 he is going to get to re-roll a focus or blank almost every time he get's shot at. Yes, with only one agility dice he will likely still get hit plenty, but it will seriously reduce the number of shots he takes, and with his tons of hits, it might just be enough to keep him alive.
(PS: everyone who ever puts Marksmanship on Han is simply wrong.)