older version e.g. QNX V6.2 :
the latest version QNX V6.3 :
try both of them ! V6.3 evaluation software ‘expires’ after 30 days, but you can still use it with limited functionality (limits won’t bother you as far as you are not interested in development tools). there’s a lot of discussion about why’s and how’s in this forum. go through it !
during the installation, you will be asked wether you wish to use the QNX bootloader in future, or if you want to stick to the existing bootloader (like GRUB). I myself use the QNX loader out of laziness, but it gives you only 2 seconds for your choice, so if you wish to have more comfort, stay with GRUB.