Treff, I have been there bro. Times like this you just want to sell everything and get out of the hobby thinking it's not for you. I did that, hell I actually tried to sell this forum and had a buyer at one time. But the members here calmed me down, and I just took it slow from then on. Hell, I still SUCK at flying helicopters, but I still have them. Well, I have an mSR, mCP-X and the RCH 600N. As you saw in that video, I LOVE to hover lol. Can't crash that bad on a hover. But, there always comes a time when you need to put the bird in the air and push your skills a bit.
As Lee stated, the HK450GT is an awesome kit. The one I had is still in one piece although it's in someone elses hands. I don't think he has time to fly it though.
Since you are a beginner, I HIGHLY suggest getting the GT with the belt. A belt will not have much more resistance than a TT. If you had issues, there was other issues with the bird. I have had belts that spun just like my TT helis. Look at the Warp and ALL Goblins, they are ALL belt drives.
Chin up bro, it's not as bad as it feels at this time.