Actually for fixed wing its about $270. I have not read anything on the blue tooth support on the neo so I cant comment on it (need to look it up though).
This discussion really is not off topic because if the OP decides to bin the 3GX he then has some info to consider.
If having tunability via cell phone or tablet then you best bet is going to be iKon. My reason is simple it has the least amount of hidden costs to get running. If I am not mistaken the iKon app is free. Next you can make your own Bluetooth TX for it and it is almost guaranteed to work. The Mikado app is $9.99 even if your using it on a K-bar, the bluetooth dongle has to be a specific dongle or requires you to jump through hoops to get it to work. I did the cell phone deal with the Kbar and with the ZYX-S gyros. I will say it did give some convenience but in the end it was not any more convenient than plugging into my lappy. Now if your only option is a tablet or cell phone then I guess its just as convenient.
As for the Neo in general, there are 2 versions of it available non-tx integrated and tx integrated. The tx integrated one is the one I use because of the Vcontrol. As for the non-tx ready, you can use any RX you want as long as you using something that is 7 channels or more. You can use 6 but you will find 7 or more even better, just because. Bank switching is the key to using the Neo, you have three separate setups at the flip of the switch. Your throttle curve, tail gains, head gains, flip/roll rates, "Dual Rates" (I believe this is agility in vstabi). If setup right then your tail gain can be adjusted through the radio. It has to be setup correctly and you have to have enough channels on the radio to do it (again 7 or more).
Down side is cost, most people cant stomach the price tag of Mikado. Its no secrete Mikado is not the cheapest game in town. One thing is for certain is that Mikado set the standard for FBL units. Downer number 2, you can brick your k-bar if you try to update it. Mikado has made sure they take out the clones. Once you get vstabi 5.3.# installed that's it don't do anything else, leave it. I have heard of folks disconnecting from the internet just to ensure they dont brick the kbar. Hell I even made sure my wireless was turned off before connecting to the lappy.
Which is going to be the best solution for someone switching from 3GX. Well its going to take research and time to find out.
Here are a few questions to ask yourself:
How much can I spend?
Do I need self level/rescue/ or what ever you want to call it?
Built in Governor?
Bank switching?
TX integration (this is becoming the latest craze)?
Support (iKon has a huge community where as Vortex does not have a huge community)?
Regular Update cycle?
How well does it sell as pre owned (you may not like your first choice or want to experiment)?
What do people in my/your area fly (going with what people have in your area is the best fbl unit)?
This is just a small list of questions to ask yourself.
P.S. I am not a rep for Mikado, I don't endorse Mikado and I don't get any kickbacks from them. I am just an average guy who just so happened to have enough money to get a vcontrol. I don't regret it, I love it and I hope you find what works for you.