I've always geared down my bikes and ran my EC250 at 13/52.
The gearing on my KTM 300MXC is very different with a tall 1st gear and close-ratio. The previous owner had gear it way down, so top speed was about 40 on the bike. I knew I would be riding in some desert terrain last Fall, so I tried the stock gearing. The stock gearing worked great for the desert stuff, and I decided to try it out in the woods. I rode about as tight and nasty terrain we have here in Orgeon, and low and behold I actually liked the broader gearing.
What I found was I was able to actually use 1st gear rather than just keeping the bike in 2nd/3rd all day. It took some getting used to for sure.
I think I am going to try the stock gearing on my DE300 and see how it goes. I will probably have to work the clutch a bit more.