I recently picked up the Grado statement platinum and don't find it overly warm. It does have a nice lush midrange but the top end is very clean and open. Since it's not installed in a Nottingham this may not be relevant but it doesn't sound warm in a somewhat modified MMF-5.
I think the main difference between the ref and the statement series is the electrical parameters. The statement is electrically similar to MC cartridges with low impedance, low voltage (.2mV). From what I have read the statement series is cleaner on the top end and less sensative to hum. Of course since the output is low you need more gain and have much increased opportunity for noise.
The good part is that the price is the same.
The Grado replaced the Goldring 1012GX that was supplied with the table. I know the 1042 is supposed to be much better than the 1012, which is a good thing.
This may or may not help, just kinda rambling.