I'm looking to swap out my speaker to get some extra tone from my DRRI. I'm looking in to putting in a Celestion Vintage 30 or a Weber Vintage Series 12F150. I know there is a difference right off the bat between British / American speakers. So far I've read either will give me what I want Neil Youngish / Grunge tones but has anyone had experience with either of these or both?

My Gear:
Guitars: Vintage LP, Martin DX-1, Epi Viola Bass,
Amps: Marshall JMD501
Effects: Empty Set right now