Which Phono Pre to upgrade to?

Check Decware

Gram Sleem Era Gold MKV should be a large improvement.

Decware is an excellent suggestion. I had one in here and compared it to the Whest and Hagerman Trumpet. It held it's own even though I selected the Hagerman in the end. Steve Decker is great to work with too.

I might also suggest you check out the Hagerman Coronet, gets you 80% of the way to the Trumpet. Perhaps the used Cary PH-301 on Audiogon now would be of interest, I owned one and loved it, sold it to finance the Whest, which is a fine phonostage but very system dependent IMO and you'll need to watch for EMI/RF issues. The prices on the Whest are dropping though so there are some deals to be had. Many people also like the EAR 834P which can be had used for about $800 and can be upgraded in the future by Mitch Singerman ifyou want to get more mileage out if it.

I think you should at least audition an Aesthetix Rhea. I listened to one in NYC @ Sound by Singer and was immediately taken by the awesome sound, dynamics, solid bass and liquid midrange coupled w/ crystle clear highs. Dual inputs (XLR & RCA), remote loading and gain, and onboard cartridge demag.