Alright if I have to go for just one....
If I was only able to own one GT rod, it would be a Carpenter Monster Hunter 80H. Very light for a rod of its rating and lifting power, casts like a dream and works medium and large poppers with ease. Not crazy stiff at the tip, so could use it for large stickbaits.
Oh.. and it looks great. Not a hint of bling anywhere. Just classic, under-stated, Carpenterness.