since the thread has already been revived, I guess I'll throw in my thoughts:
I really like my F700; it's way more of a system than I thought I could get for the money. I was actually just looking for a higher-end portable GPS when I realized the F700 could be had for about the same price. It's not perfect, but for the price (I got mine with live cashback), I didn't expect it to be. XM and iPod control, which are the two features I probably use the most, work great, even though there are minor things I would change about both. I didn't consider bluetooth to be a big deal when I bought it, but I've really enjoyed it, and mine works very well. I didn't really care about voice recognition either, but it's pretty handy for voice dialing. The VR can be pretty frustrating for audio control, though.
All that being said, if I had to do it over, I probably would spend the extra money for a Kenwood simply to have Garmin navigation. I know alot of people like the F-series nav, but, for me, it's just OK. It has a lot of features, but I just need it to get me from A to B with as little effort on my part as possible. With my F700, I still have to keep a sharp eye out for my destination because the unit is usually a couple hundred feet off and doesn't tell me what side of the street it's on. This means that I often miss my destination and have to turn around and go back. That's wasted time that a nav unit should help me avoid. My wife's $150 Nuvi is more accurate, better at routing, and tells the destination's side of the street.
Like I said, I was really looking for a portable GPS when I bought the F700, so the navigation was really very important. I just think the Garmin nav on the Kenwood unit would have been a better fit for me. I would definitely miss the nice graphics of the F-series, though. That's neither here nor there, though, because I don't plan on getting rid of the F700 anytime soon.