Having had an Aesthetix Calypso, I would not recommend it. I thought it was great at first but as my system and ears matured I could clearly hear the faults. Most notably noise. Not from the tubes, as I rolled many. The best way to describe it is when it's stated "a black background". The Calypso does not have it especially when you hear your system without the noise.
There are many good preamplifiers out there. In your price range I would encourage you to take a look at an Audio Horizon. It has all the bells and whistles including a remote.
Good luck and enjoy