Either one is a great bulking cycle. Deca is generally regarded as the better overall bulker, however the increase in hunger that EQ causes cannot be ignored. As we all know food is the most anabolic substance, consequently any steroid which greatly increases your appetite to the degree EQ does is of great benefit.
I think test/eq/deca would be an absolute great bulker. Not too many people run eq and deca together because of long held misconceptions that they basically accomplish the same thing.
Test is test.
EQ to increase hunger and greatly increase blood volume.
Deca to lube the joints and increase strength. Get those heavy ass weights up!
Sounds like an ideal stack to me.