Hi,
I too have recently purchased a V3....I have also gotten the upgrade to V3i. You dont have to get the upgrade if you dont want too, as the standard v3 will work just fine. There is just more things and options etc to use and utilize. Not a recall but an upgrade. There is a difference.
Being a recent owner, I have found it a short time the V3 can tell the difference between nickels and pull tabs. It is not 100 percent but most of time, it works!. You have to practice a bit, study and some experimentation to be sucessful. I personally think the v3 is probably the best all around detector out there, but at first I didnt really know what I was doing and furthermore, didnt know what I had for options. The analyzation screen of the v3 does very well and the v3i even better.
In sum, I do think the price for the upgrade is worth it....especially when Whites has the best customer service of just about any business,,,,not just in the metal detecting realm. You can count on them for help, service and whatever else they can do for you. Besides, when and IF you sell the v3i...you will get your money back because your detector will be worth more....like money in the bank...so to speak.