To be honest, Matt Smith's Doctor has just become so weird and fun and unpredictable to watch that I actually find the other Doctors kind of.... safe and boring now.
I used to love Tennant, but watching his episodes for the first time in a while, I find myself a lot less enchanted than I used to. Basically he just runs around a lot, gets really emotional, and breaks into a lot of huge, wide-eyed grins. He kinda seems more like someone's wacky brother-in-law
than the mysterious and alien Doctor. Lol