I have had both radars. Let's put it this way. If you are looking for a radar for pure performance, the V1 without a doubt. It will give you the most range and I don't care what anyone says I'll take the arrows over any GPS any day.
If you are looking for something that has more "bling" or features and something more quite. I would go with a 9500ix. I'm not biased at all. Both are great radars and have different uses for both. I originally bought the 9500 but it was not for me. Its definitely a lot quiter, but that bugs me. Having my valentine I KNOW I have something there to protect me. Whereas I didn't even know my 9500 was in the car. I gave that to my dad and upgraded to a v1. I wouldn't sell my V1 for the world. Loving every second of it. It has never let me down.
Hope you make the right decision! GL!