Go for it. Great camera, easy workflow. Work for movies (Crank 2) as well as for documentaries and events.
There is several used ones around, you can get one for a good price. Good luck.
I shoot on a Canon XH-A1 and I enjoy it. I'd be lying if I said it was the best camera out there available, but its definitely an affordable choice which is capable of some incredible looking footage. Look into the Canon XH-A1s, it is the new model of the XH-A1. It improves on a lot of the weakneses of the XH-A1, in reality making it a much stronger camera - but more expensive too.
I would go with XH-A1s. There're a few things that Canon should issue a firmware fix in XH-A1. But they indeed come up a XH-A1s instead. You can read about it in my blog
The one thing I don't like is the workflow. HDV tapes have their advantages but ultimately I think they are a disadvantage. But it's certainly not a game changer.