Truly a personal preference deal here!
In regards to keyword stuffing, there isn't much of an issue as Google doesn't focus on anymore these days. They are frying much bigger fish! However, I don't like the idea of the GORILLA approach where you are thumping your chest with ALL CAPS LIKE THAT (nice analogy EGOL lol)!
Using a site like Craigslist for example, they will remove a post if you use all caps in your title because it is considered spammy to the users. Nobody likes to feel they are being FORCED TO LOOK! Like EGOL mentioned, it makes me cringe when I see things like that. I would highly recommend against it, if at all possible.
End of the day, keep your end users in mind. Don't force feed them. Provide high quality content and a great user experience. You shall prevail!