What are some good happy hardcore/trance DJs and artists?

It took me forever to figure out that this was the genre of "techno" i liked for lack of a better word. So now trying to find DJs that I like is becoming very difficult. Ive recently just been going based on youtube videos finding songs i like and then looking up the artist but thats not really working cuz half the time people upload songs without knowing the artist and just put trance or nightcore instead. I was able to find one DJ that i like alot, DJ Splash, and i do like the stuff that the actual group Nightcore did. Im basically trying to find new Happy Hardcore and Trance songs so i figured finding DJs would be better than just typing trance into youtube and listening to the same stuff i already have on my ipod. So if anyone knows any good artist please let me know, thanks.