If you want something that's just plain "musical", pick up a used Jolida JD-100a (stock), throw in the tubes of your choice (I dig the Sovtek LPS's), add a decent power cord, and be done with it.
Like most anything else that's affected by personal preference and system synergy, you'll either love it, or hate it. I'm not even going to get into trying to define my impression of the sound, but for me, the Jolida has been an affordable blessing, and IMO, still stands out in the crowd.