Squiers are nice. But sadly the same guys who make fun of the Silvertone will make fun of a Squier. On the other hand, the majority of folks here wouldn't think too highly of ESP. The upshot is to find something you like, play well, don't worry what other people think of your ride, relax and enjoy.
(I got a G&L Tribute SB-2 in your price range and it is a FINE instrument. I got it from the classified ads here. There are a bunch of great basses for sale here all the time. Find a TB'er with a good reputation who is selling something you like and take the plunge.)
BTW, I almost bought an OUTSTANDING ESP here for $350, but I waited too long. I don't really regret not getting it, but it was a beautiful bass.
ESP's and LTD's are not the same thing. That's like calling a Squier a Fender, or an Epiphone a Gibson.
I forgot about G&L Tributes. I change my vote to those! An L2K Tribute would be awesome!