I have a T2 and bought the 5 for it . I mostly leave the stock coil on for field and turf hunting but if a place is ridiculously filled with trash or I am hunting near metallic playground equipment or vegetation like Ice plants , I will throw on the 5 . I like the way small items hit hard and very clearly on it .
I have found a few silver dimes in spots where I don't think my 11 coil could have fit in to get them .I don't know how deep it will go as I have never found anything deeper than 4 with it but judging by the loudness and clarity of the signals there should have been a couple of inches more of depth left.
Not that the stock T2 coil is heavy but that 5 feels really good . Hope this helps . :groovy: