Budget outboard phono stage Rec's

Hi all,
I am looking for a relatively low cost phono stage.
I am running a Cambridge audio A-500 integrated amplifier fed by a Pro-Ject Xpression TT with a Grado Gold cartridge.
I am considering the Cambridge 540/640 p's, NAD PP-2, or the project phono box. Any experience with any of these or any other sub $200.00 suggestions.
Parasound Zphono used for about$100

My Pro-ject Tube Box SE does not sound 4 times as good although it cost 4X
i use the cam 640 with a music hall mmf 5 and tube integrated, works great, certainly not the best sound, but you are on a budget and it does a nice job