I just received the AipTek Go-HD from Costco ($250, free shipping and free theater docking station). I'm comparing it to my Sanyo Xacti HD1a and I am hooked by the AipTek. The real drawback on the HD1a is the low light performance which is very noticable. On the AipTek, low light is not a problem - I've shot some very low light shots that would have been abysmal on the HD1a, but the AipTek impressed me. The AipTek also has a video light for shooting in complete darkness - works well for up close shots.
This is not a prosumer camera (I've also got a Canon G2 - 'prosumer 4mp' camera), but it's great for carrying around all the time in a pocket (like the Sanyo HD1a). It definitely has a cheap feel to it - very lightweight and plastic. There's very little in the way of manual settings - everything is auto. I've got an 8gb SDHC card that is working just fine it so I can take a lot of video - 3-4hrs as doc'd. For battery life, I have a 56min video shot with 1 charged battery and 1 'battery bar' left when I turned it back on for some snapshots.
low light video
sharp panoramic video (HD1a tended to be blurry when filming panoramic mountain scenes)
video light in addition to flash
remote with all options (record video, take picture, zoom, and navigate all menus)
Macro mode is ok.
Easier to open LCD than HD1a
Tripod mount is right below the lens which is good for photo stitching.
zooming is loud - noticable motor noise
audio is mono
menu system is sort of "hey, look it's fisher price for HD cameras"; maybe this is a plus?
photo/video review (takes a couple of button click to go back and view recently taken footage)
Battery goes down while it sync SD card (battery charge is via USB port - either USB to PC or USB to supplied AC adapter) - package comes with 2 batteries - these batteries are small!
No sequential action snapshot mode
Can't lock focus and no manual focus
Grip is awkward and difficult to hold and press buttons - my hand is not that big - stretches my palm out too much. (Not as nice as HD1a feel).
DateTime setting keeps getting reset, I *think* when I exchange batteries - how bad is that!
No Lens cover - just a cheap looking flat piece of glass.
My big question: how in the world does a camera like the Aiptek Go-HD with a small lens produce such awesome low-light video / photo performance? My HD1a, Canon G2, and Sony DC-40 have larger lenses but none come close to great low light performance.