I've decided to get a flash for my Canon 80D, I also have a Canon SL1 that my daughter uses. I have never owned or used a flash so would like input as to the ones I have it narrowed down to. These are in no particular order. Looking for the best out of the bunch. 1. https://www.adorama.com/fplfsmzcak2.html 2. https://www.adorama.com/fplfsmzl2cx2.html 3. Godox TT685C Thinklite TTL Flash with X1T-C Trigger Kit for Canon Cameras 4. Godox TT685C Thinklite TTL Flash with XProC Trigger Kit for Canon Cameras 5. Godox VING V860IIC TTL Li-Ion Flash with X1T-C TTL Trigger Kit for Canon Cameras 6.Godox VING V860IIC TTL Li-Ion Flash with XProC TTL Trigger Kit for Canon Cameras If I kept them in the right order 1, 3, and 5 all have the same trigger and 2,4, and 6 have the same trigger. I know these are the same flash units just different names. They were spoken highly of by several members that's why I picked them. Might consider others. My biggest question of these is there a benefit of one trigger than the other? I know the one allows you to mount a flash on top but is that a feature that would be used often? I think that is my hang up on these. Are rechargeable batteries preferred of the lithium-ion battery pack? Also the Flashpoint mentions R2 but the Godox doesn't. Do they both have that and one doesn't mention it? Is that something that is preferred or really useful? Anything else I should consider either in function or benefit? Sorry this is so long. Just want to make the right purchase.