I get the noisy vision too, usually there's a lot of it around corners and edges, like the object is disintegrating into pulsating dots or bubbles and rising (I've gotten really chaotic vision as a result), it depends on the bud though. And if you want to know about my weed use, I think I say more than enough in other recent posts.
The only 'real' psychedelic I've done is Mescaline, and while the peak was more spectacular than weed usually is, I feel as though there was some safety glass between the powerful earthquake-type buzz and I, something that keeps me from having a really bad trip on mescaline alone, but I'm sure I would have a different opinion if my dosing was much higher. Weed gives me way more anxiety and is a much dirtier drug considering its hallucinogenic effects. Mescaline was so clean and clear that it blew me away. Acid would undoubtedly be unbelievable, but I don't think I'll ever try it. (Reason for mentioning mescaline can be deduced from the information below)
I have some mental disorders (OCD, for instance) but I've only heard of one psychotic or schizophrenic person in my family (I don't remember which one), and we aren't closely related. I've gotten those kinds of effects (like hearing teens talk about me or laughing at me outside, near a window) before I did anything else, but it got pretty crazy later on when the drug combinations came into play. I've tried many kinds of drugs as of now, but I decided quit all of them, and I've been clean for 1->3 days depending on the drug. I was able to reduce my intake and avoid serious withdrawal.
For those of you who don't know if I was serious, I was. Weed caused these distortions on its own, but after I tried mescaline (and had a bad trip with weed+mescaline), the faces got so much more intense. Mescaline on its own (with small amounts of drugs probably still active) felt awesome, the speakers looked so happy as they produced all of those pure musical notes. They were just happy to be speakers, doing what they were meant to do, you know?

But when things begin to mock you and laugh at you, or twist around and grin in a very sadistic way... shit, I never want to go past that point again unless I'm really feeling kinky. Honestly, one of the worst feelings in my life.
I noticed that the combination of marijuana and zopiclone produced personification of objects, and I was using both of those quite a bit around the time I tried Mescaline.