I just started detecting in Aug 2011, 8 months ago, so I consider myself 'still kinda new'.
I started out on a Minelab X-terra 705, which is a mid level machine and all I could afford at the time, which is still good. I was very fortunate. After 3 months with the 705 I wanted a top end machine.
I got the Etrac. Totally different than the 705. like the 705 on steroids...LOL. But some similar things like the tones and some basic settings. made the transition easier. I guess I went from the Mustang GT to the Lambo...LOL
Since then I have always had about 3 machines, and have had some of the top machines, and have also used some top of the line machines from the main manufacturers even that other people had while out.
Some of the higher end machines I owned were T2 (like the F75), Etrac, AT Pro, and have used a V3i, Cortes, I have and still use a Minelab ETrac as my main unit.
It seems like you are questioning the V3i and what you think about it, compared to if you had an ETrac instead.
In my opinion.... and I am not brand loyal, I am 'performance loyal'...
Both the V3i and ETrac have great stock programs for park, beach, etc.
I think the ETrac's stock programs are little easier to use than the V3i. When you are new, you rely on the stock programs while learning. I had my ETrac for about 4 months and am just now venturing into the custom programs. It takes time to learn either machine and make it routine. The more you go out, the better with the machine you get.
What's funny is that, for some reason, with the ETrac, I learned a modern dime signal/display/sound very well, just from using the ETrac over and over hour after hour in the field. When I hear the tone + the TDI of a dime, I can now almost with certainty KNOW it's a dime. I'd bet money on it. That is from practice practice practice... and I am learning more every day.
Don't write off the V3i. I have heard and believe that it has a higher learning curve than the ETrac, but once you get used to it, and programming it, it's a BEAST!
The worst thing to do would be to dump the V3i, add cash and get an ETrac, get confused on it and wanting to hook it to your laptop and start downloading making programs, not find anything good, then sell the ETrac for a F75, then hear the finds of the V3i and Etrac users and go round and round and waste money and time....
As for the AT Pro? It's my new back up detector to the ETrac for when it rains. My GF uses it and hit some nice stuff in the parks. It's a great machine and in my opinion a fantastic bang for a buck! But, she will call me over with my ETrac to go over iffy signals to decide if she wants to dig. That kinda says something for the Etrac and why it's 2X+ the price of an AT Pro.
just my thoughts. Glad you are getting out and want to learn....