Fellow Xstitcher here!
Been doing it for...uh...10+ years now (whew, had to think about that one hah!) I like to do the real big, overly detailed charts (bigger the better). I know they can be a pain (especially if you mess up...which I've done...by 1 square!) BUT when you finish and get them hung up...they look AMAZING! And you have bragging rights about how you did it yourself lol. I made a really nice hunting chart with 3 Labs (white, chocolate and black) with flying pheasants in the background as a wedding anniversary present to my grandparents! They loved it and it was pretty big! I'm sure I took a picture of it (finished) before I gave it to them, but I'd have to look around for it lol. Worst case scenario, I can post a pic (later on) of the chart and what it looks like.
I am currently working on one with several Big Cats, but messed up...again, by 1 square ! As soon as I get it back on track I'll take a progress picture. Again, it's going to be big. So the first challenge is finishing it....the second, finding a frame! LOL
Pics will be coming soon. But it's late at the moment so...