Preowned Hawke Endurance ED 20-60x68 or Hawke Frontier ED 20-60x85??? (3 Viewers)

[Bearish]

I am looking at buying either of these spotting scopes, Hawke Endurance ED 20-60x68 or Hawke Frontier ED 20-60x85.

Both are preowned and are priced around £400.

Which would people recommend?

I currently have 2 pairs of Hawke bins one frontier HD X and one endurance ED both of which I think are good.

Any advice would be greatly appreciated

Thanks