Metered Prism Finder for Hasselblad 500C/M

Hey gang,
I was just wondering what your recommendations are for a TTL metered prism finder for my 500C/M? I just started looking into these and I'm not sure what the differences are. Do some have spot metering? Do they cover almost 100% of the image? I just want to be able to shoot in the field without a handheld meter.
Thanks in advance,
Ara

There is always the Kiev-88 finder if you are looking to save money. Kiev finders are spouse to be compatible with Hasselblads. Mine actually seems to be very accurate considering.

http://www.kievcamera.com/product.php?ID=11

I bought one of those kiev spotmeter things. With MF, its just more of a pain to use. It's not like it is coupled with the lens or anything like that. You have to look through the finder, move the thing around, turn it to the side, read the f/stop/shutter combo, look at the lens, set it. Faster if you have a handheld. I sold it and got a plain PM prism for the cost of one of those kiev's new. My old sekonic 398 studio is still going strong.

The new PME45 meter finder offers both spot and center-weighted, but the Hasselblad site doesn't indicate the size of the spot. Older PME45s, like the one I have, were center-weighted only. It uses a 3v Lithium, CR-2 battery, and eats them rather quickly, as I recall. For the premium price of the metered finder, I don't think it's worth the price. For the difference in price from the non-metered finder, you could buy a couple of good multi-function meters, and hire a member of the Swedish Bikini Team to take readings for you.

Swedish Bikini Team? Ok, you convinced me, I'll buy the non-metered prism. Actually, after looking at some threads from the Hasselbladinfo.com forum, it seems that it's not really worth getting a metered prism. I agree, if it's that time consuming to use the metered prism, then a hand held would be a lot quicker. The non-metered ones are ultra cheap on that auction site.
Thanks for the advice guys,
Ara