I agree. For simple designs, I personally would go with number one, as it shows the base color better than number two, but for more complicated illustrations, I would go for number two. It has a more soft look to it, and I think it also makes the drawing look a lot prettier with the blended in purples. But it's your decision, so do whichever you're more fond of, and the one you have the most fun with.
The watercolor one looks both more refined and sketchy at the same time, and I like the palette more there, but I'm also inclined to the 'usual' one because it has a better base substance...so I dunno. If you can give the watercolor style more substance, like in this example the midline and darker parts get darker, richer color, then go for that.
Practice makes perfect. And I think you can develop a very nice, refined style that's detailed without being too overwhelming if you can mix the two. But yeah, everything is perfect, and this is just my opinion. Your style should be what you like to ude and, feel good using and developing.