[Tilt, TyTN II, MDA Vario III General] Steve-C:
Question really is....what do you want / need your phone to do?

I came to the Kaiser (o2 Stellar) from the HTC Universal (o2 XDA Exec) a month ago. I do miss the bigger screen and keyboard of the Uni. Apart from that the Kaiser is better in every way. So much nicer not having to soft reset every other day cos I'm running out of RAM (I have yet to soft reset the Kaiser for any other reason than installing software). So much nicer not having to juggle where I install stuff, it just all goes onto the device in the huge memory available (no sarcasm, after getting by on 30MB, suddenly having nearly 100MB to play with is huge!)

Camera, its a PDA not a SonyEricsson. I was hoping for better pics with a 3MP camera on board but it's no replacement for a real camera. It will do if you have nothing else, and I doubt you'd be disappointed with the results as I suspect the Tytn I camera is no better than the Uni's.

I suppose I do miss the flash on the camera, mainly cos it was a handy torch. I did miss the IR port, but got off my butt and set-up the BT on my PC and now use that instead for file transfers when I don't want to plug the sync lead in.

I have used the Kaiser with a SonyEricsson HBH-100 BT handsfree, it works fine. I also use a SonyEricsson MBR-100 BT thingy to connect to my car stereo and home audio system. Likewise this works perfectly. Finally I have a Nokia 610 car-kit and it connects to that via BTSAP, no problems. All of it straight out of the box, no patches, updates or hot-fixes. BT driver issues? Not in my experience. Only thing that doesn't work with the phone is my older HBH-10 headset. It is about 10yrs old, and is probably just too old to be compatible.

Video? I converted loads of videos years ago to wmv files to use with a HP Ipaq 5450. They play just fine, little jumpy, but this is due to the compression (25mb for 45 mins of video) rather than the device itself, they are jumpy on my laptop too.

Audio? Built in loudspeaker is poor. But what do you expect from something that small that was designed (I guess) for voice, not music. MP3's play well, and when connected to headphones or an external sound system, its great! I bet the type of people that can hear the difference (and care about it) between 192kbs and 320kbs encoding will argue the toss...

GPS. IMHO, no problems. Used it with several apps, gets a fix quickly, holds onto the signal well and is accurate enough. Bench testing against my Garmin standalone GPS (Kaiser plonked on the dash, Garmin with an external roof mounted antenna) both get a good signal and the tracklogs more or less match, good enough for sat-nav anyway (yes the Garmin is more accurate and gets stronger reception but it does have that powered, amplified roof antenna to help it remember! The Kaiser has never failed to get a fix)

WiFi and other data (GPRS, 3G, HSDPA etc) works well. I have the Opera Mini browser as well as PIE. No problems surfing the net, checking email, using MSN or Skype.

Just have a look at the threads in this forum, how many are from newbies asking for help, or moaning something doesn't work when they haven't tried to fix it, or just plain don't know what they are doing?! I'm not saying the Kaiser doesn't have issues for some people, but seriously, if you can get the Kaiser for little or nothing, just upgrade already and if it's really not to your liking stick it on Ebay and make a few hundred! I have a collection of old phones and PDA's so I don't have to use the Kaiser. If it sucked, I would have gone back to my Uni in a heartbeat. The only time I don't use it now is if I'm going out and want a phone with me I don't mind loosing or breaking.

Hope that helps?