I'm currently shopping novel number one. Two agents are reading completes (slowly!) and one has a partial. 39 other agents -- including you -- have passed on it. Meantime, novel number two is close to completion, and purely from a one-line pitch perspective, seems like a far more salable premise. So I'm wondering what happens when I have two projects I'm pitching. Do I put the first one in the drawer, and try to sell it after I've sold the second? (I know I'm being optimistic.) Do I pitch them simultaneously?
This is a very hard call, and a very subjective one. Hopefully readers will chip in with their opinions, but my own is that you pitch the one you think is most marketable first.