I own a Minelab CTX, a Whites V3i, and a Teknetics G2. I agree, all are good machines, just different. And, they all have their advantages and disadvantages. To get good with any one of them you have to spend a lot of time swinging the detector.
That said, a couple of observations on something that I find irritating:
With the V3i, rusty bottle caps tend to look like quarters. When, you detect the target, it looks like a quarter, When you dig it, you find out it's a rusty bottle cap. You see this same type of thing with the Fisher and Teknetics machines. Bottle caps look like quarters.
With the Minelab machines you don't see this. To a Minelab machine, rusty bottle caps look like rusty pieces of steel. With the Minelab machines, if it says it's a quarter, there's about a 90% chance it's a quarter and not a rusty bottle cap.
What I don't understand is that, if Minelab can make machines that reject rusty bottle caps, why can't the other brands do the same?
But, that said, If I wanted a high end machine and I was on a tight budget, the nod would go the Whites.
If I was not willing to invest the time to learn the machine I would go with the Teknetics.
And, if weight was an issue, I would definitely go with the Teknetics machine. All Minelab machines and the Whites V3i machines are heavy to swing machines. But, Tekenetics machines are very light and easy to swing.