So, I found that AV-8b harrier, and I tweaked it so that it flew really good for me. I don't have other PCs to test it on, so I uploaded the updated version. It turns out, it doesn't work nearly like I want it to on friend's PCs. Link is
http://www.simviation.com/simviation/download.php?ID=9001. It is supposed to be able to almost completely vertically take off with 2 notches from full of flaps @ 30% fuel. It does that for me. On friend's PCs, it won't VTOL. It will surge forward and take off at like 50kias. Does it work that way for you? I feel kind of embarrassed that it doesn't work like I wanted it to. Any reasons/suggestions/help would be welcome. Thanks.
Asus G71GX-RX05 from BestBuy.