I have owned:

2 vg4
2 vg6dr
1 600A infinity
3 660 infinity
2 1000 infinity 10 channels
1 quasar

I use my gear a LOT and I can honestly say (after owning two futaba radios also, and just purchasing a JR10X a month ago) that the Airtronics gear is top notch, and every bit as good as the other big brands.

Even if the plugs are the older style, its easy to flip the pos/neg on any new servo/switch/other plug you buy today and use them. If its a good deal go for it! Also, I have had very good luck getting my radios serviced (had a litium battery replaced and a gimbal fixed inthe past year, I dropped the radio) at the Airtronics repair center in California.

Thats all I can offer, my own experiences!

AJC