Hi all - I'm now typing this for a second time after my browser crashed whilst helping someone get rid of a virus :-(
Anyway...
I'm surprised that no-one has yet asked what sound system you're using - this will help sort out a few issues.
The way I see it is that you have a couple of options:
- Buy a camera and hook that directly into the sound system
- Buy a camera to record the video portion, whilst using a separate sound recorder to plug into the sound system
- Buy a camera and use your own sound equipment
If you were to go with the first option, again we need to know what sound system you've got. For the second one, this is also helpful to know, but most recorders should be compatible. If you're looking for specifics, get an Edirol R-09HR - I've used this myself on many an occasion (not in Churches, however) and found it to be a really reliable bit of kit.
My other suggestion was to use your own sound equipment. This is really if you're going to enjoy doing this, and perhaps do this as a more of a serious hobby, rather than helping the Church out. You could do things like record weddings for a decent profit, this would cover your expenses as well as provide a good service for the couple (etc).
Moving onto the cameras you've mentioned:
Comparing the 70 to the 150 is like comparing two vastly different cars (e.g. the 'retro' Mini, and the BMW one). As they were developed at different periods, they aren't really comparable like that.
From what I've read (I don't own either of them), the 70 is basically a very capable prosumer camera, whilst the 150 is more of a lower-end professional camera - it has a plethora of manual controls, certainly when compared to the 70. If you're going to be using the camera outside of the church, I'd certainly say go for the 150, otherwise feel free to stick with the 70.
After saying all that about the Panny's (which come highly recommended from someone I know), I'd like to talk about my camera - a Sony HD1000.
This looks like a professional camera to people who aren't "in the know", whilst being extremely good value for money - they're also excellent for this sort of thing, events. If this was me, doing the church recordings, I'd go with the Edirol for the sound recording, and use the camera's on board (excellent quality, I may add) microphone for the backup/additional sound. Coupled with a cheap tripod (I found a tripod with 2 pan handles, and is basically a cheap Manfrotto rebranded, for under £200) this completes your setup.
The camera records onto HDV tapes (MiniDV) so this is the only 'let down', but you can easily hook it up to a laptop via Firewire, and record the footage 'live'.
Just my tuppence (two cents :-) worth!
James