Which stem?

dixonpj
dixonpj Posts: 75
edited November 2007 in MTB buying advice
I've been experiencing lower back pain (muscular, I'm fairly sure) and numb fingers and arms on long rides, which I've been trying to remedy by making subtle adjustments to the position of my saddle, but so far to no avail. Although it doesn't necessarily follow that my ride position is too stretched, I'm interested to know what difference a more relaxed ride position, and the shock absorbing properties of carbon, would make, so I've just invested in some low rise bars (Easton Monkey Lite SL).

Quite apart from any medical benefits the change of posture may make, I know it's going to bother me that the cuffs no longer match the collar, so to speak. The obvious solution is to buy the matching Easton EA90 stem, but this doesn't seem very imaginative, and the alternatives, as I see it, are as follows:

1. Ritchey WCS 4 axis. 10/10 in MBR, as I recall, but only 6/10 (?) elsewhere. What do people think?
2. The new Ritchey WCS carbon (I'd include the link to Wiggle, but the site's down as I type). Horrendously overpriced?
3. Thomson X4. A thing of beauty, but heavier than what I already have, and everyone's a weight weeny at heart.
4. This from Storck: http://www.storck-bicycle.de/en/web-anz ... ront%20end

What do people think? A cross country/occasional trail bike stem, 150 ish grams, money no object?

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