Neuseman, how long you been detecting? Where are you detecting? Kinston NC area, I know, but what type of sites?
I know where you live, it ain't soil conditions you have to concern yourself with, Kinston is rather mild soil. It's not highly mineralized, so the 250 should be stable.
Look, a person doesn't just walk into a kitchen and is automatically a great chef.
It takes time, patience, research (there's that word again...) and luck to find ANYTHING of real value.
Sure, there are stories of folks walking out into their yards and findiing something of significance, but those are the exceptions rather than the norm.
As I mentioned in your other post under the Garrett forum, at first dig everything. That's how you learn what the detector is telling you.
Read the manual from cover to cover. Study it, study the detector. It's how you learn what you are doing.
The Ace 250 is a great machine that you don't need to upgrade, unless you really want to.
David Booth in England recovered priceless ironage gold torcs (solid gold necklaces) with a Ace 250. Look at Garrett web site.
You got a GREAT machine, just learn how to use it!!!
Upgrade if you like, but be aware that you'll still have to learn what the new machine is telling you, and if you select some machines, it'll tell you way more than you need if you are a beginner and easily confused.
I've got an aquantance that is a terror with an old 1980's Garrett that was given to him. He learned how to use it and within a couple of months he had found enough pocket change to buy a 250, now he's using both.
Long story short, learn what you got before you upgrade. If you are not patient enough to learn the 250, then upgrading to an E-Trac or a GTI-2500 or a White's Spectrum V3 will really be frustrating, because those machines are all very complex.
Come on, step away from the cliff, get out there and have some fun learning the 250. It'll serve you well.
Dwight