Check around for a Smith & Wesson Model 637 or 642. I've seen them around here for about $490 and Bud's listes them at $432 including shipping (though you'll need to pay an FFL to receive it for you).
It's very concealable, even with shorts, can handle .38 Special +P ammo, and is light enough to carry all day long. While it does have a kick with +P ammo, it's no worse than the LCP and with regular .38 Special, it's a lot of fun to shoot. The LCP doesn't offer that option. I really like mine; it's become my most frequently carried handgun.
Another possibility is the new Walther PK 380 which Bud's is listing for $308.00 delivered. I've seen it for under $400 in local gun shops. It's definitely bigger than the LCP, but it is still slim and easily concealed in an IWB holster with a loose shirt. It holds eight rounds in the magazine plus one in the chamber and is a real pleasure to shoot. Spare factory mags are already available from S&W and I now have a total of three. I have had mine for a few months and have never had a problem with it feeding or extracting and I have fired as many as 100 rounds at a time through it (I've been buying up .380 ammo for the last eight months, so I have a pretty fair stash).
If I sound like I am trying to talk you out of the LCP, it's because I am. The LCP is too little gun for the round, too small and too light, and it is not pleasant to shoot. A box of .380 through an LCP will leave you with a very sore hand and some especially sore knuckles and finger segments. The PK380 is just .4 inches wider, 1.34 inches longer and 1.6 inches taller than the LCP and some of the height advantage disappears it you add the finger grip magazine extension Ruger supplies with the LCP. It also weighs about ten ounces more which makes all the difference when you pull the trigger.
THe Model 637 weighs just six ounces more than the LCP, if weight's a big issue.
A CCW is supposed to be for self-defense, not self-abuse. Sure, you can steel yourself to "handle" the LCP, but I look forward to going to the practice range with my PK380 and 637 (the 642 is good, too, I just prefer hammers).