A lot of people recommend the Apogee Zephyr. I built one, and I think it's too big and heavy for a L1 cert. I may save that for my L2. A LOC IV, just about any 3" rocket if it's built well, the T-LOC, the SBR Fusion, and any other half-decent 3" or 4" rocket will work fine. I mean, L1 isn't that hard, all the rocket has to do is go up and come back down, preferably, all in one piece. People have done their L1 with DBRMs.
As soon as it gets warm again, I have a BMS 3" School Rocket that I'm doing my L1 with. I've already flown if many times on F and G motors, so I've got a pretty good idea of exactly what I'll get with any baby-H. It's been built as good as I can build it, so it'll survive almost anything. I even had a G go CATO on one launch and rip apart my shock cord, but the body tube and payload section are fine. I patched the shock cord with some orange paracord, and it's ready to fly again.
I quasi-glassed the body tube and fiberglassed the fins. Unless it goes lawn-dart into concrete it's not getting damaged.