sideswipe

Hey guys, I am a bass player looking for a really good multiefect and I am a big fan of line6s PODs. Especially the hd500. Now, I didn't tried it out but I heard that the hd 500 is equally good for the bass and the guitar and has all sords of efects and bunch of amps is that true? I am not very in to it so that why I am asking. Also, I have a really good chance to buy the POD 500x, but I don't know is it that good for the bass as the guitar. Because I want to use it for my bass guitar, does it have a bunch of efects and amps? I saw that the POD pro has only one amp for the bass I don't know is it with the hd500x the same? Anyway pls help me :)