All that said, then well, it really depends a great deal on budget, which is probably stating the obvious really. The more you pay, the better you get, but it's a law of diminishing returns.
I can't really think of anything better than the PMW200 at the moment, not at that price tag, anyway. A year ago, I might have leaned towards the Canon XF300 instead, but since the EX1 transformed into the PMW200 (and got the fully approved broadcast codec) then I'd say Sony have retaken the crown. Fundamentally, it's down to 1/2" chips versus the 1/3" of it's competitors, and that includes Sonys PMW150. Maybe significant is whether you're looking to broaden the range of work, or just looking for two VX2100s replacements to also use for weddings?
Reasoning for the latter statement comes back to what Mark M says. You can use SDHC with the PMW200 - but not for XDCAM422. Only for XDCAM EX. Actually, these days a lot of people are talking about using XQD cards in SxS cameras via adaptors. I don't have any first hand experience, but the advocates say that they offer all the advantages of SxS, without the possible pitfalls of SDHC. I also concur with Mark that for your type of work then nowadays XDCAM is a far better bet than AVC-HD. The file sizes aren't that much bigger, and it's far more easily dealt with by computers than AVC-HD. It depends on the computer, but typically XDCAM can be dealt with pretty easily native - AVC-HD is far more comfortable if transcoded.
One other thing from me, which ties in with robos comment about "you have to be happy and at ease with the camera" is something which often gets overlooked amidst all the tech talk, and that's the lens. One big operational difference IMO between a pro camera and a prosumer is that often the former has "true" manual control of iris and focus, the latter is via servos. That manifests itself as the former having proper end stops, the latter being continually rotating - the focus won't stop at infinity. Some servo lenses are much better than others, but they typically also have a "soggy" feel to them where you start to turn the ring.... and the response happens a little later.
What would I buy with 10K? - None of the above. In my opinion a 2nd hand EX1R is the ultimate bargain camera right now. If they weren't available then I'd take a long hard look at the JVC HM600/650 - possibly rent one first to help me get over the stigma of it not having a Sony badge.
Thought I'd post an update to say that I ended up getting 2 Sony PMW200s and couldn't be happier with them - amazing picture quality and low light performance. 1 thing I hadn't considered before buying them though was my editing software. Been using various versions of pinnacle over the years but it doesn't import xdcam files so also upgraded that now too! Tried a few trial versions and then opted for sony Vegas pro suite. Another learning period!
How are you getting on with the PMW200. I've just bought one and doing my first wedding with it on Saturday. My old camera was shoulder mount so trying out working with monopod.
it's quite heave to keep stead handheld for long periods. Also not sure how audio recording is going to go once a disco starts blasting out tracks. Have you found the AGC or limiter to help with this?