I believe the HV30 hit the streets in 2008 which was around the time AVCHD caught up.
I bought a Panasonic 3 chip AVCHD model in 2011 (they'd been going a few years) to replace my HV20 (mechanically and optically identical to the HV30) for about 60% of the price.
The quality of the video is better especially in low-light where the Canon produces noticeable noise . . . . . the Panasonic is remarkably free and any noise is very fine.
The fact that the AVCHD does away with potentially problematic tape drives is great but the main advantage is the speed of access to every clip.
My old 2008 iMac can download an hour of video in well under 10 minutes and I have instant non-linear access to any clip on the SD card.
I can also video in extra long play modes that will give up to 4 hours on an 8GB card with virtually no degradation of quality.
Furthermore, I never have to worry about the camera breaking down as I can play my SD cards on any computer.