Welcome to the Lovehoney forums.
I guess it depends on what shape you would rather and whether you just want clitoral or if you would like the use of internal as well.
Tango is a lipstick shape that could be used interally and externally but not as easier for the later.
Touch is a external vibe that would work much better for clitoral due to the shape but would not be used for internal.
For me, I would rather have the touch as I need external more than internal however the choice is up to you.