Looks like Boost Mobile is actually expanding their handset lineup now. Dennis from wapreview.com (who has incidentally come upon an invite code to the awesome Skyfire mobile browser, good until August 30th) tipped me to the presence of the Motorola i776 on Target's website. No price, no online and no in-stock message for stores anywhere near me (to be expected) but it's coming. Engadget doesn't like it, but really you have to give Sprint\Motorola credit: it's a nice phone on what is, for Sprint anyway, a dying technology. The i776, like the i875 that Boost used to sell, has a lot of features (camera, Bluetooth, external color screen) though there are no external music controls on this one. But at least there's something available better than, say, the i855 (no Bluetooth) or the i355 (no camera).
According to Sprint's own roadmap, the phone will probably come out next month (Q4 '08), which isn't too bad. I'd say the phone will run about $100 on Boost Mobile, who is now subsidizing their phones at least a little, as oppoed to the days of yore when you could get a top-of-the-line i885...for $400.
So if you must have walkie-talkie and GPS Boost will soon have a more feature-rich, if not attractive, phone for ya.
Speaking of GPS, looks like Boost will allow use of its turn-by-turn directions software for free...if you're looking for a place to reboost. Of course, the only benefit to this is if you either don't have a credit card (in which case you would be able to add airtime to your phone by dialing *ADD) or you're looking for a random convenience store somewhere nearby, which you may or may not get with the Reboost locator. Stll, it's a nice touch.