For my personal use, I have both a IR video camera and digital camera/video. Honestly there are cheaper IR cameras out there ( $100.00) where you can buy IR lights ( that plug in the the wall for under $15.00)
While you will be able to record and take photos with out the IR, videos and photos will only show up if you use flash or an alternative light source.( when in the dark) and of course flashes will introduce non-paranormal dust/moisture particle pick ups that might not of been picked up without the flash
Honestly a lot of people start out with the basics and work their way up in equipment.
I started out with a digital audio recorder, a regular digital camera and a EMF detector about 15 years ago. My regular artillery consists of :
digi audio recorder
IR cam
Digital Still Camera
Digital Video Recorder
K-2
"Ghost Box"
Motion Sensors
I do use other equipment from time to time, but not regularly ( geophone,laser grid, Ovilus)