I own both the T2 and the 'hot' UK version of the Vaquero called the Trident 11 Extreme which has the 11x8 WS coil on,so basically the stock coils are identical size wise,this is of course my personal opinion but the Vaquero is not as deep as the T2,if i then put one of my larger NEL coils on the T2 then its game over for the Vaq,the main reason i bought the Tesoro based machine was mainly the weight or lack of weight i should say,i have had wrist problems with my swinging arm so a lighter everyday machine was required,so my 3 main machines of late are the T2,Deus and the Vaquero,if i need the use of a 'heavy hitter' and use big coils then i can only use the detector/coil with a full GPX harness this allows me a full days relic/hoard hunting on some of my sites.
The Vaqueo for the most part is used with either a 5.75'' Tesoro coil or 10x6 Mars Sniper coil and used for what i think it excels at is really trashy roman sites and in between stubble,the discrimination side of the Tesoro with a small coil is about as good as it gets.
One thing i wioll comment on is you are asking folks for depth figure !! on what ?? someone could quote a good depth on a coin size item or someone could also quote you a depth on a cannonball which is of course being bigger will give better depth,just because you have seen a YouTube video that gives a depth on something at 15'' does not mean you will be able too replicate that in your ground conditions ??
If you mainly hunt for deep relics and live in a prime location then you could either get something like a 'BIG Nel coil which is much cheaper than buying a totally new machine,or a very cheap alternative but a very effective way is get say a 'IDX Pro' which can be picked up for peanuts if you hunt around and then buy a new 15'' Concentric coil for it from Whites for not alot and then you will have a phenomenally deep outfit,quote from the Whites official website mention on large targets depths upto 36'' are achievable of course this is all pro rata depending on the size of the target and ideal ground conditions but would it be deeper than say 15'' on a candlestick hunting with a Vaquero !!! i personally would say yes and by a fair margin.
I still think you are not using the T2 too its true depth potential yet,must admit i have never had any problems with depth with mine,a larger coil used correctly on the right ground condition and also the right size targets will succumb to this machine and mine is one of the original green models that does not have boost or any other power feature.
