Hi. If quality is a big concern, I'd recommend going with a 3CCD MiniDV model with a good lens, good low light performance, and manual control options. Unfortunately, I don't know of any brand new camcorders that meet those requirements which can be had for under $1,000. Hopefully someone else can provide some suggestions for new equipment.
If you don't mind buying used, you might consider looking for a Sony VX1000 (this would be my first choice given your requirements), or a TRV900 or TRV950 for decent performance in a small package. But do thoroughly check the camcorder before the wedding since you don't want to discover any hidden problems on the big day.
These three camcorders all have multiple housing options. The VX1000 will be quite big and heavy though.
For the wedding, also consider your audio and lighting set up. Wireless mic on the groom is a good idea so that you can hear what's being said during the ceremony. A camera mounted light for daytime fill or nighttime reception shots is also nice to have. Extra batteries. Lots of extra tape. Tripod. Shot list.