SPL meter recommendation

I don't own a handheld SPL meter and would like to get one. The only one we ever seem to read about is a Radio Shack model that's nice and cheap, but is always referred to as being not that accurate. (From what I can tell, it may not even come with any type of calibration disk, but I'm not sure about that). Without going crazy expensive, are there any up-a-level alternatives out there that might give even better results and come equipped with diagnostic tools? Or is there nothing in between the RS and full-on pro-caliber or remote-mic jobs?