How do you explain paying 3x the price of a Whistler Pro 78 for a V1? Don't get me wrong, the V1 is an excellent unit. I had one and I love it other than the constant door openers it picked up which made me eventually turn the volume all the way down. The V1 does really good on paper and I know there's no comparison with Whistler's pro78. But my thing is this, in the real world, I'm sure the Pro 78 with rev C will give you more than enough time to slow down when there is a threat whether it's X, K, or Ka. The V1 may alert you 2 seconds or more sooner than the pro 78 but the bottom line is, you will be alerted and you will have slowed down before approaching the threat. Yes, I know the arrows are a nice feature but really, who cares where the leo is? When the device beeps, you SLOW DOWN, end of story. I guess this is just my opinion though. Also, I've read that the V1 is VEEEEEERY detectable by spectre which is bad news if you live or travel in VA. Also, I know V1 is the best laser detector out there but by the time you pick up a laser alert, all it's telling you is that your speed has been read with laser.