The Zoom Q3 looked really cool a couple years ago but I was waiting patiently for the Zoom Q3 "HD" to come out and grabbed it last year. Being a guitarist, songwriter and teacher the Zoom Q3 HD has come in quite handy. For band rehearsal, gigs, even just for recording song ideas as a songwriter with an acoustic, or electric guitar and singing in the room, it's super convenient.
Built-in stereo condenser microphones with 120° X/Y configuration for true stereo imaging
Video resolution of 720p at 30 or 60 fps or 1080p at 30 fps
WVGA (standard definition) at 30 or 60 fps is also available for smaller file sizes
Get up to 45 minutes of 720p at 30fps video with 2GB SD card
Accepts up to a 32GB SDHC cards for 7 hours of 720p at 30fps (Audio at AAC192 kbps)
Large 2.4-inch 320 x 240 color LCD display
Built-in NTSC/PAL TV and HDMI output
4x digital zoom
Video format: MPEG-4 AVC/H.264 (MOV)
Audio formats: 44.1/48/96kHz 16/24-bit WAV (PCM) or AAC up to 320kbps
Auto Record Level automatically sets audio levels during recordings
Uses two standard AA batteries or NiMH rechargeable batteries
USB 2.0 with built-in cable
Windows and Mac OS compatible
Built-in speaker and tripod mount
Includes HandyShare editing and, YouTube uploader software, Apple Quicktime, 2GB SD card, two AA batteries
Optional accessory package (APQ-3HD) includes soft shell case, windscreen, AC adapter, HDMI cable, AV cable and tripod
See these videos on my youtube channel for examples of the Zoom Q3 HD:
"PRS McCarty Orange Rockerverb 50 mkII"
"Chris and Max"
stchrismusic - YouTube
The only downside is not havng the ac adapter included you have to buy this separately. Also, if you set it for audio only recording and you turn it off it always automatically defaults back to video, with "camera" on, not horrible but a bit of a pain when doing audio only recordings and the camera automatically shuts itself off after a couple minutes.
Otherwise it's a great and almost a necessity for the professional musician.