If you're new to the track, just keep rocking either your Street Triple or your Daytona. I only have two track days under my belt, so I'm in a similar situation as you. After my first track day, I was scoping the WERA classifieds for bikes with the mind frame that I'd get a dedicated track bike.
But since taking my second track day with Ridesmart over the weekend, I'm now convinced that I'll just keep pounding on the Street Triple. I bought it for 5700, it handles like a sports bike, and it goes like stink around the track. If I lay it down, so be it. It would then just become an even more dedicated track bike.
So rather than spend 3-5k on another bike, I'll just keep slowly improving my Street Triple according to my own skills' needs. The bonus of using the Street is that once I'm done with the track day, I pull the tape off, screw the mirrors and license plate back on, and I'm back to a screaming commuter.
There was a guy this past weekend with a seriously hooked up Street Triple. Not only did it look incredible, but the guy was pretty damn fast on it. He had all the goodies, KTECH cartridges, KTECH shock, even BST carbon rims. These bikes are killer.