So I'll tell you our experience....
the DR is big and it's bigger than I want to lug on vacation. Just the size of the bag it would take to carry it was a big detraction. We wound up getting the Pro1 which is a higher megapixel (8) but smaller while still having an SLR look to it. It's packed with features and takes AMAZING pictures. It's much smaller than the DR. We are LOVING this camera and everything about it. It's so easy to use but so packed with features you could never get bored with it. We just got our 1gb card for it and were amazed that even at the largest picture size and fine setting we still get almost 500 pictures on a card, gotta love that! The 7x zoom is impressive and the flash is really good too. I can't see really ever needing more lens than what it comes standard with on a vacation. Sure I like to play around at home but on vacation I don't want to hassle with switching lenses. This lens is a great quality and range.
As you can see, I cannot say enough good things about this camera.
I got mine from a dealer on Ebay who was wonderful and paid about $300 less than retail. If you're interested, pm me and i will give you his info.
Have I mentioned the AMAZING photo quality? We've already done some 8x10's that are better than what we have gotten at Sears and Olan Mills. Love, love, love this camera!