F330 vs HD250 cameras plus lens questions

It seems we have budget at our small tv station here to purchase additional field equipment. Right now our primary camera is the DSR-450, and the universal format here is DVCAM (control room, edit bays, field equipment). We also have a Z1 and occasionally will use one of our Ikegami DVCAM studio cameras as a field camera. I'm trying to decide if we should start migrating to HD, and if so, should we go the XDCAM HD route or stick with a good HDV camera such as the JVC HD200 or HD250. I don't care for the Z1 or any of the other Sony "handycam" styles of cameras. I guess both options have pros and cons. With either the HD250 or the F330, we'll have to purchase some kind of feeder deck for a NLE bay. Apparently, Sony is coming out with a disk drive for the XDCAM disks. It's not a deck, but will hook to a computer to transfer files. I'm guessing it's between 3K and 4K in price (which seems rediculous for something that's nothing more than a disk drive). With the JVC, we'd have to get their HDV deck that will read the 720p tapes.

Obviously there's a big price difference between the two, especially if we'd get a true HD lens for the 330. We're certainly on a budget. It's been suggested to us to just use a good SD lens on the 330, but I'm not sure what the real trade-off is in doing that. The Canon KH20x6.4-KRS lens is at least 8K dollars from what I've seen.

We don't currently deliver anything in HD (masters, our cable channel, or DVDs), so it's hard for me to justify HD to my boss, especially the more expensive kind of HD. Sure the 330 does DVCAM as well, but if that's all we'd use, why not just get another 450? I'm concerned about tape and flimsy Sony tape transports they use on DVCAM cameras and small decks nowadays. With XDCAM, it'd be great to browse and log video files over our network from most any computer. That beats having to tie up a deck in the control room. I've heard from some tho that the quality and features of the 330 and 350 aren't worth the increase in cost (over the usual offerings of HDV cameras). We use Sony Vegas and Avid Xpress Studio to edit. I guess Vegas can handle the MXF files pretty well... not sure about Avid.

Sorry for the long post. I'm open to any and all feedback right now. Thanks!

-Lance Herring