I use a Panasonic 3-CCD one (model no longer made) and it does not have a specific low-light feature, but I have used it at night quite successfully under execrable lighting conditions, even, on one occasion, by a single candle an estimated 35-40 cm from a person's head. I was able to enhance the image in Ulead MediaStudio Pro.
Unless you REALLY NEED very low light features as an imperative must, I would say you would be better off spending the extra this costs on 3-CCD, which improves the colour rendering very significantly on ALL your shots. My experience as a video pro of many years' standing (semi-retired, now, although I still do beta-testing of professional video software for a leading manufacturer), is that many consumers buy a model for a specific feature, such as 120 x electronic zoom or low-light, they use it once or twice and then never again.
I think I don't need the PAL version. My TV can play NTSC. I am planing to make DVDs from the miniDV tape. Today all DVD players can play NTSC DVDs. NTSC is also 30 fps not 25 like PAL. Do you think there is any reason to buy the PAL version?
Believe me, you are being VERY misled. It is true that many (not all) PAL DVD players and TVs can play NTSC, but they do it by a clumsy conversion to PAL. The NTSC signal is at 29.97 frames/sec. The inbuilt converter simply skips out nearly 1 frame every 1/5th of a second, so you lose out on video data. NTSC has a frame size of 720 x 480 pixels. PAL has 720 x 576 pixels, so you have a much better pic quality in PAL. Perhaps the most telling argument you won't understand is the colour space. NTSC DV has a colour space designated 4:1:1 whereas PAL DV (and all DVDs) has a colour space of 4:2:0. This means that colour rendering is two-times better in a PAL DV format (on your tape) than in an NTSC one and will produce less fringeing (a sharp edge in an abrupt transition from, say, the corner of a white house silhouetted against a deep blue sky).
Summary: buying NTSC would be a VERY foolish move, indeed. The failings of NTSC are why the Americans have rushed into high-definition TV, before it is really mature, while we, in Europe, are taking our time because our standard-definition TV is so much better, already.
I don't know whether you know what making DVDs from DV tapes entails. The learning curve may be quite long and you must have good hardware and software. If you wish, I can advise you on both.