I've got the DC310 and have been extremely happy with it. All of the underwater pics in my gallery (click near my name on left) were taken with it. So you can see some "real pics" taken with it. BTW... none of those pics are the ones I cleaned up
with Photoshop. You can make them look great once you photoshop them.
The DC310 is the "same camera" as the DC300 but just has more buttons on it (or the housing). But it should take the same pics.
It takes great pics and for the purpose of what I wanted it for, which was simply
to make snapshots of my dive, works great. I think it's 3.3mega pixel, (but can't remmeber for sure).
I'm not sure that Reefmaster is still making the DC300/DC310 any more.
I think they have now migrated only to the production of the DC500.
But I'm sure you can still pick it up in some stores, but compare those
"older model" prices first to the DC500 prices at Phil's shop. You can
most likely get a newer/fancier DC500 for just a few bucks more.
The advantages of the DC500, from what I can tell are, it's 5 megapixel, has a much larger LCD screen. has easier to use buttons, comes with a rechargeable battery, has a zoon lens, quicker shutter lag, and has "shark mode" which will allow you to snap multiple shots.
hope that helps.
-Mike