Opinion of budget phono preamps?

At one time, I owned the Adcom GFP-565, and found it to have a very satisfactory phono preamp. Infact, the review article published in either Stereophile or TAS stated that the phono section was as good as a number of much more expensive preamps. You can often buy used 565's for $275-300 (there is one currently listed here on A-gon).

Well, I have a Rotel, and it isn't very good. It isn't much on sound stage, doesn't have much bass authority, and is not particularly detailed although it's not bad in that category. I suppose what does one expect for $90 new? It is certainly functional, and it is certainly adequate for recovering access to that old vinyl collection, but I certainly would not call it hi fidelity.

I am not sure of your definition of "budget", but there is a Lehmann Black Cube phono preamp, with an optional power supply, on Audiogon, right now, for $475.00.
This is a great little phono amp, and to me, for that price, would be a bargain.
I use one now, and I find it to be mighty fine, for the money.
Mike