As a fellow newbie, I suggest you buy used and go with something else in the same price range.
I purchased the Nokta Simplex and did my first 3 hunts with it, simple and effective machine. I was initially wanting the Fisher F75 based on everything that I read and watched, but the price didn't match my needs right now. Then just a week ago, I came across a deal on the Fisher F70 with the extra coils kit for about what I paid for the Simplex and headphones. The Fisher was a Christmas gift that never left the house....a true bargain at $350. I used it today for the first time.....I absolutely love it. It is far more stable than the Simplex (less chattering), feels really well built with the aluminum poles, and did a great job identifying the targets. Even has a better pinpointer.
The Simplex has advantages over the Fisher in that it is waterproof, upgradeable, and LED Light, but I really enjoyed using the Fisher far more. I plan on keeping both for awhile, but had I found the deal on the F70 first, I would not have been tempted by the Simplex.
If the Simplex had a more rigid lower shaft upgrade, a recharge port seperate from the headphone adapter, a smaller coil option (might happen yet), and padded armrest I would have been happier. Still a bargain for so many options, so you can't go wrong with one, but it is probably never going to become your only detector.