Looking for mouthpiece suggestions

I know this question gets asked here just about weekly, but I'm looking for suggestions for mouthpieces to try—I'm pretty familiar with the offerings of Bach and Yamaha but I don't really know what's out there in terms of other brands, so I was hoping I could get some input here!

I've been playing on a Yamaha Eric Aubier signature series mouthpiece for everything except marching band (I use a Parduba 4.5HJ for that) for a couple years now, and while I have liked it, I'm beginning to notice a few problems with it; the biggest one being its performance in the lower register. I find it difficult to maintain a full sound when playing low, and the intonation is often fairly horrendous.

I used a Bach 3C before I switched to the Aubier piece, and I was thinking about trying a Bach 1 1/2C now; would that be a good mouthpiece to pick up? And can anyone recommend anything else that I should look at trying out? (and before it's mentioned, I do know that ultimately I'll end up playing what I like the most, I'm just looking for some suggestions so I can find something I really like)