out of all these quads you’re sure that the Diatone GTR M568 Anniversary 6S is the quad for me. I want to make sure that I get the right one.
Simple answer... no, I'm not sure! There are easy 300 different 5" quads out there, to say this one is "for you" is something I cannot say. Let me elaborate.
You say you have some previous FPV experience, I can't quantify what that means. Would you be better off with a TANK that you MAY (or may not) break less? Or are you a good enough pilot that you can get something HOT but not quite as sturdy, because you won't be crashing badly (after all, your not a newbie you said, even though you are not sure of what quad, what receiver, will your goggles even work with the quad, etc), so it is a bit tough to say not knowing your skill level at all, or what your are looking for EXACTLY.
If you buy the Arris, it won't be your last one, and if you buy the GTRM568 (5s or 6s with lower kv motors) or the GTRM548 (4s max with higher kv motors), it STILL won't be your last one. No matter how you go, it won't be your last one.
No matter what you get, it is likely it will be broken quickly from a crash, and you will need to buy parts and repair it, that will take time and money, so maybe you understand why we all have more than 1 quad. If one gets broken, we fly another until we can get parts and make the repairs and she tests good to go again.
When you look at the hottest quads out there within a budget... Diatone is hard to beat by anybody in the marketplace, not every single model they make, but most of them are stellar for the money.
If you do get the Arris, buy this one if RTF, at least that way you get a Taranis for your $300.
If you want to spend $300-$550 for the quad alone, there are many choices, but you want to get the real deal without spending too much, after all, you will want more quads in the long run.
So answer some deep questions about
ARE YOU SURE that a 5" is what you want? Or might a 3" or 4" make more sense (a little lighter, so a LITTLE less chance of breaking)
Freestyle only, or might you race some?
Good enough pilot not to crash much/badly, or probably need something more sturdy?
What battery do you plan to run 4s, or 5s and 6s?
Can you solder? Because soldering, and having and knowing how to use a voltmeter, are a MUST in this hobby. You will likely need a heat gun in the long run too.
Do you already have a decent battery charger that will charge up to 6s packs?
The list could go on and on, but this is enough to get you thinking about what is involved in "making a decision" about what to get and what is right for you.
I started with 3 PNP Eachine Wizard X220, and I still fly them from time to time, they are a good starter quad when you just want to get in as cheap as possible, before you realize that as "cheap as possible" is not necessarily the best way to go. The Wizards have terrible ESC's and I had to replace them all over time as they blew up. But I already got a Taranis and the Wizard X220 was a great way to get into the hobby for cheap since all 3 ready to rock and roll only cost me $315. Read what JB has to say on his web page, see that the Wizard and the Arris are the bare minimum, then compare to the price of the "next step up", Oblivion or Kopis. These are for RTF's but the basics apply, though I would get a PNP and a Taranis so that I never HAD to buy another TX again, the Taranis is THE industry standard with 80% of the world market.
If you want to fly an FPV Racing Drone, but you don't want to build it yourself, these are the ones to get.
www.fpvknowitall.com
Let me know what you think and I will do my best to point you in the best direction.
IMHO
Randy