In this day and age why buy an older technology CCD HDV camcorder when there are others with newer CMOS optics? Well right now, the CMOS technology is good but it isn't great, especially in low light. The older triple CCD equipped cameras like the HDR-FX1 and the HVR-Z1 work better in lower light than the newer FX7s.
I've had an FX1 for a while now and must say that I'm very happy with my purchase. The quality of material I've shot is excellent using Sony HDV tapestock and the playback is top end. The camera manual controls are a dream with an excellent zoom ring close enough to the focus ring for the nimble fingered to use one handed, but far enough apart for a separate focus puller to use without getting in the way. The weight of the unit is good, not too much for hand held use. I like the top mounted view screen like the Z1's and I've found the on board mic to be surprisingly good.
I would suggest the purchase of a NP970 (or equivalent) extended life battery - why do Sony ship the orderinary one at all? along with a decent tripod. I've used bith Vinten and Manfrotto tripods with this camera and to be honest can't decide which I like the best, but make sure you get one with a good fluid head suitable for HDV camcorders. The audio in is a 3.5mm minijack but a Beathtek adapter will add a couple of XLR connectors without the expense of having to stump up for a Z1 camera instead.
A great camcorder and I'll have to be seriously impressed with something else before I replace it.