Smoking more weed may not necessary get you more high, if you're a regular user with high tolerance. I've myself experience the "Stoned Wall" where you just smoke and smoke and it just makes you dumb and sleepy, none of the nice affects of highness like giggles and creative thought.
Also, getting more high is not necessarily the best experience. A moderate high is how my friends and I have always enjoyed ourselves best. A habit of moderate use will get you higher per toke, that is, it take less weed (and less money, risk, and hassle) to get high if you don't smoke a cigar-sized joint three times a day.
Flavoured papers are pretty bad for your health, so that's not necessarily good. But there exist a preponderance of them for weed users, available at all head shops.