Cody, don't buy the zone VI compensating timer with out the lit probe.I've got one and it works great but is not any better than any other timer with out the probe, and their kind of expensive. I all so have a D2V omega, but use the standard variable condenser head and Ilford VC filters that work very well. My zone VI enlarger has the old blue color lite grid, so using it for vc papers is a big hassle,but graded papers it works great with the comp. timer. For the omega Aristo makes the type v54 grid I belive and all so the VCL00 some thing models, one has a type V54 grid with the filter drawer built in it. The outer one has two grids Yellow and green that have a separate control for the unit. These are expensive. There other comp. timers out there that are still being made that you can check out. mike c.