I'm contemplating the move from my NX80 to the iQue. Has anyone else made the jump? iQue users, do you have any problems running hires+ apps? I am torn between the tradeoff of handheld GPS and camera/keyboard. Though I rarely use the camera or keyboard, when I do, I'm glad it is there. I can think of situations where the iQue would be convenient, though most of them are in my car, sometimes they would be while traveling with others, so a car unit wouldn't do me as much good.
the ique is supposed to have really bad battery life
yes really bad battery life...actually my clie UX-50 died recently and i am having an iQue Shipped to me currently. I have a power outlet in my car and a usually charge everything at night anyway. I did have a NX-80 but alas it died too and im on to better things <i hope> but I'll follow up on those hi res apps and shtuff as soon as I get it.
I made the jump from the NX80 to the iQue and I am very happy with my decision. Yes, you will find there are some apps that support the 320x480 screen for Sony and not for the iQue, but these are few and far between. Most major apps do support the full screen on the iQue. I, like you, was reluctant to give up the camera which I rarely used and the wireless capabilities (bluetooth MS and CF WLAN card). I never used the keyboard. I find GPS to be so much more useful than those other things. If you rarely use those features of the NX80 then I think switching to the iQue will be a wise decision.
I use the GPS almost daily and it is so much better than the GPS system I had with the NX80. I had a bluetooth MS and a bluetooth GPS device (the Fortuna GPSmart). I used Mapopolis Navigator software. Setting it up each time I used it was time consuming and unreliable. Using GPS on the iQue is fast and simple. Good luck and let us know your decision.
I am still waiting for my backordered iQue...Sheesh! It still says usually ships within 5-7 days...It feels like it's been forever! And I still can't wait! Gah!
I bought the M5 about a month ago and utilize the GPS navigation system on a daily basis. I've been waiting for the Windows based Ique for years - Now that I've waited I find it the most productive tool on the market. If your in Sales or the Service Industry it's a must have. If you want a IQue --- Try the Pocket PC Version (:
I Que M5 
Linear Mode
