Finding powder may be a problem; finding small pistol primers will be even more challenging.
I use W231 for target loads (low recoil, reduced velocity). For medium to high loads I'm using Unique, which isn't super clean or easy to meter; however, it appears to be consistant over a broader range of weights. My more intense 9mm loads use Power Pistol.
If you really want clean burning powder, then check out VV-N320 or VV-N340.
A lack of planning on your part does not necessarily constitute an emergency on my part.