For those not willing to plunk down $300-400...there is a very good alternative.
You wont find these in big box stores, but can order them from specialty stores (and Amazon too I think).
The Whistler Pro Series (either 68 or 78). They are $90-150, but all share the same electronics. Some quick research finds them ranked as the best buy for that price point and they hold their own against $400 competitors. A good review is here:
http://www.laserveil.com/whistler/pro-78/xtr-690/
I have the 68 myself ($83 at Amazon now) and could not be happier. I have a Rocky Mountain (a 430 I think) and there is no question that the 68 blows it away. NO false's (but I have X off) only activity is when LEO are around. Could not be happier.
I am not an "intentional speeder" but occasionally I look down and find myself creeped well into illegal speeds. It seemed after I put the 18's on...the car is quieter and more stable...80+ feels like a comfortable highway speed.
Are these comparable to V1's? No...but they do a very good job. I have no reservations in stating that these beat 2-3 year old top-shelf technology....hands down.