Btw, I recently found out that my earlier described problems with the SVIDEO->VGA solution (dark image, so so quality) are totally gone when I use it on A1200. Before I was using it on my A4000 and the IQ was acceptable, but nothing to write home about, plus it was unusually dark - no brightness/contrast/gamma correction settings I tried gave me a totally natural looking picture. So in the end I bought an Indivision for the A4000, which, of course, works fine.
I recently obtained an A1200 and tried the Amigamaniac's converter + VGA box combo on it and it works great! The picture is totally stable, the colours are correct and overall the quality of the output is very very close to the Indivision. I don't know if there's something wrong with my A4000, this is just heads up for anybody who might be thinking about trying the cheaper option on their A4000 that there possibly might be some issues. On A1200 I don't see a reason to buy Indivision if you're only after games/demos, the biggest (only) advantage is HighGFX.
Btw, HighGFX 1024x768 through Indivision on my A4000 is quite blurry. Is it normal? Considering the age of the host HW I guess it is I just wanna be sure. Thanks.