I assume you mean the Zone System, as invented by Ansel Adams. I've not heard of a 'Zone VI' system.(posted 9361 days ago)In my opinion, a spot meter should be high-priority for good control of your exposures. It enables you, with practice, to very quickly find the contrast range of your subject, and this tells you what exposure to use and how to develop the film (or whether you want the N-1, N or N+1 film magazine).
I use the Minolta Spotmeter F, which also does flash, but not incident light. There are plenty of other models on the market. If you can get close to your subject, a non-spot meter can be used, but it's not as convenient.