[Blind-sysadmins] webmail recommendation

Hello, Does anyone have Linux servers running email services? If so, I'm looking for a webmail recommendation. I've got a Postfix virtual mailbox setup with a mysql backend going and want to add in a webmail component to it. The two I know of are squirrelmail, (which I believe uses php4 said on their site which is a no no for me), and roundcubemail (which is not at a 1.0 release uneasy). If anyone has any pro conn for either or recommendations for another that they're using I'd love to know about it. Thanks. Dave.