115 OR 210

well, if you are gonna buy both anyways, then it doesn't really matter, but I would choose the 210 first...

 

Are you talking about Ampeg 210 and 115? If so, be advised they are BOTH ported. The 115 in front and the 210 in the rear. Since I have owned both cabinets, I can tell you that you will be getting a good amount of "boominess" out of this combination.

If you are not talking about Ampeg cabs.......nevermind.

 

I sometimes use the Epi 210 and 115 together. Which ever 210 you decide to get, whether first or the 115 first, the 210 will be sound louder and more outfront with more presence. The 115 by itself (if you get it first and pending which one you have in mind to by) will be a fuller tonal range in the low end yet give you good upper frequencies as well. I personally prefer my Epi. 115 by itself before the 210, because I prefer it's tonal range and a smooth low end for the B string.
But if you're going to get them both anyway, I thing you'll be happy with either one first.

 

I've found 15's to seem a lot louder because of the added low end. 210's are good if theyre pointed at you but otherwise I can never hear them.

 

IMO the 210's are more focused, a tighter cone so to speak, so the sound would seem to be more promanent over a 115, although I do prefer the 115 over all warmth.

 

+1, but I think you'll be happy either way

 

Definitely go the 15 first - but trial them out together before you buy anything. It may change your mind.
You may decide against it, and use (2) 1x15" like i do.