ATI TV wonder doesn't have both NTSC and PAL B/G simultaneously. Correct me if I am wrong, cause the dealer told me so. Also, he mentioned getting the PAL version could be a feat. (I am refering to the CABLE TV format which is PAL B/G here.).
I am living in India, and unfortunately, both Hauppage and ATI are not here. So, I contacted an online dealer (in USA) by email and he told me so.
Also, the cable in India is mono (no stereo), so it doesn't make much difference whether the tuner is mono or stereo. (Its shocking but true).