I would recommend the PS Audio GCPH if I was buying new in that budget range. The wonderful thing about the GCPH is its easy adjustment to match any cartridge and gain requirement, as well as its remote control gain, phase and mono. You can even use it alone, without an intermediate preamp, straight into your amp.
Used, I would get a SimAudio LP5.3. Wonderful sound and you can usually find used for around 750.
Used, I would get a SimAudio LP5.3. Wonderful sound and you can usually find used for around 750.