[LAU] Preamp for mic/ guitar (was: hardware: recording voice and acc. guitar)

Hi, I've bought a m-audio audiophile 24/96 and a mic shure sm 58 beta (thanks for your advices ;) ). I also have a epiphone les paul elekt. guitar with a orange crush 30 r amplifier. Now I want to be able to record voice and guitar, so I need a preamp... (or a mixer, if that's better) My budget is around 100 euro, but don't be to strict on that, maybe I'll can get some things second hand... I was thinking about these things, but Giuseppe, was telling that the art tubes are not a really good choice: - http://www.thomann.de/nl/art_tube_mp_project_series.htm What about the alternative in this area? - audio buddy: http://www.thomann.de/nl/m-audio_audio_buddy.htm - Studio Projects VTB1 : http://www.thomann.de/nl/studio_projects_vtb1.htm What are good preamps? Are there good preamps in the range of 100 - 250 euro? (Maybe I'll can get some second hand). Thanks in advance, Dirk