i have a gorilla g-tac, its a vest style with 2 pockets in the front that i keep my doe bleat and cell phone in. not the most expensive or fanciest out there but it is quite comfortable and makes me feel safe 20' up.
I upgraded my harness to the HSS hybrid flex last season and I’m really happy with it. I spend a lot of time in the tree and wanted something light and comfortable but still have pockets. I ordered a Muddy first and sent it back I felt like the shoulder straps were stiff and seem to ride up when I moved.
I have only used Hunter Safety System vents so I can't speak for others. I own both the Hybrid and X-1 from HSS. Depending on time of year, etc. determines which one I wear. They are comfortable, easy to use and good quality. I typically where the Hybrid during archery season so I can put things in the pockets. During rifle season I wear the X-1 and wear it under my heavier outer wear.
Take a look at a rock climbing harness, I switch last season and should have done it sooner. I have the Petzl Aspir works great, a lot of guys like the Black Diamond Vario speed harness, Vario has less padding.