My sixth pokemon...

I cannot decide.
Originally, I had been saving the place for suicune (My favorite legendary, and the only one I've never been able to catch. Pokemon Crystal decided to give you a Master ball AFTER you battled suicune, which was just greaaat. *sarcasm*)
Anyways. I had been wandering towards the safari zone and encountered two pokemon I ADORE and have always been curious about raising.

The first was a seel on level 16. I know she will be useful on the last gym. Plus it's cute and Dewgongs are pretty
The second was a growlithe... on level 25. which really wouldn't benefit my team in any way... but growlithes are adorable and one of my favorite pokemon <3.

And, since I'm about to go into the Safari zone, I'll undoubtedly find something I like in there. (Taurus, anyone? I've ALWAYS wanted one of these and I've never gotten around to catching one...)

WHAT WOULD YOU RECOMMEND I DO?

MY TEAM:
Quilava Lv 29
Togetic Lv 26
Gyarados Lv 23
Butterfree Lv 25
Flaafy Lv 26

Thanks -.-