Range tank - 52 vs 60 vs 70 prayer

Discussion is as it reads above:
As a range tank, what differences will be made in pvp/training up to pvp with different prayer levels?

What I know:
Higher prayer = lower chance of getting smited
Fewer ppots needed
Better prayer restore per sip
Higher prayer = higher cb.

I'm looking to go 70/78/80 and eventually max.

 

I'm going range tank too and personally, I'm staying 52 prayer because I don't want the extra cb levels.

 

Lower cb levels are always the best, because you can replace extra levels from prayer with range, hp, etc. I recommend going to 52 prayer and staying there

 

Yep, you should be fine with 52. It doesn't really make a difference whether you get 70 or 52. It's just 2 extra combat levels.

 

Keep 52 really, no real need as ranger to get 70.

 

70 is a waste of money for a range tank it's not needed either