I compared several of the low cost solid state phono pres' you mentioned here as well as a few others and found them to be somewhat dry and lifeless to me. I ran them against a Dyna PAS 3-X, which easily bested them all IMO. I have a friend who owns and operates a small audio endeavor, who swears by the ASL unit(he uses one at home). Be aware it runs less than the advertised gain, so unmodified you'll need a fairly high gain MM to get the best sonic benifit. Also, could be a tweaker's delight. They sell almost immediately here when they come up for sale used. I have not heard it yet myself yet I plan on giving one a serious listen by this summer.
Pax
Pax