I'm so sick of keyjamming I really need something that has full n-key rollover but I'm not sure what I should get that will last a long time and will be worth the money.

I saw a video on VWestlife's youtube channel that demonstrated the IBM Model F's full n-key rollover but that keyboard's layout is really funky and doesn't have directional arrows on it at all...

And I keep hearing and reading mixed messages of n-key rollover over USB, some people say it's impossible due to how the HID drivers work and the USB bus itself, and some people say it is possible but requires special proprietary drivers. My current PC has a PS\2 port and I am using a PC-AT to PS\2 converter dongle that works, so should I just go for a Model F and put up with the strange layout?