I had a Harris bi pod which was 9-13 I think which I swapped for a Harris 13-27(think thats the size) as that will be far more useful where I shoot when the grass is longer. But I will probabley get either a Harris benchrest version (6-9 i think?) for zeroing etc. Have any of you found any of the other makes other than Harris ok? If so which ones , how were their build quality and performance please?