Well, Bill, tough question. What do you like to hunt most? You said parks and schools, which suggests you like to hunt coins, and maybe jewelry?
I think both machines will do you well. However, if I were in your shoes, I think I'd go with the G2. Here's why -- it's VERY simple to use, but VERY stable and VERY powerful/sensitive. Very fast, and will do a great job in EMI and in mineralized soil. Since you live near gold country, it would even do you well in a prospecting application (what it was designed for first and foremost) if you ever wanted to try that. The G2 is generally not quite as deep a detector as the F75 SE would be. However, some folks in the west who have used both will challenge that assertion (right Low-Boy?!) But, what it may give up in depth, it makes up for it in my opinion with OUTSTANDING VDI (digital ID information) -- better than the F75. The G2 is NOT marketed as a pure coin shooter -- but most will agree it does surprisingly well in that application. I think, since you are just starting out, that saving a few bucks, while getting a very simple and fun to use but OUTSTANDING performance all-purpose machine, argues for the G2 (or the Gold Bug Pro DP model -- the DP model comes stock with the large coil and, except for cosmetics, is the same machine as the G2).
Again, though, both are very good machines, and you would probably like either. I really think though that the simplicity, stability, and ease of use would, in your case, argue for the G2 over the 75.
Hope that helps, I'm sure you'll get some more opinions from the guys here (though you may want to post your question on the Fisher F-series forum, also, as you may get other opinions there

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I do think the stability and simpicity of use for a newer detectorist would argue for the G2/Gold Bug Pro -- and if you get alternate opinions on the F-series forum, you might ask them about the superior stability and simplicity of the G2/Gold Bug Pro!
By the way, I have owned both -- not an F75, but its close cousin the F70 -- as well as the Gold Bug DP.
Take care,
Steve