Well if you have good soldering skills, you can build your own RGB to SVHS adapter, schematics are out there, so it could be even cheaper! I bought Amigamaniac solution, because i dont have any soldering skills, and i really didnt want to build the adapter myself!
This is how i came to the decision of going thru that cheaper solution. I have an Amiga 1200, so i did the following comparison table:
My solution VS Indivision 1200
SVHS Quality / RGB Quality
external / internal
any Amiga / A1200 only
N/A / reflashable, new screenmodes can be added
N/A / flicker fixer built-in
composite out / N/A
SVHS out / N/A
N/A / Monitor power saving support
N/A / Optional scanline emulator
OSD menu / custom software
$57 USD / $167 USD
I really liked the Indivision, but it is awfully expensive, so i chose my solution, which was $110 USD cheaper. The only big disadvantage i saw in going my way, is that i had no flicker fixer, but then my LCD-TV has one built-in, as many new LCDs have.
Furthermore, there have been many problematic stories with the Indivision (setting it in place, and some display bugs), that it made doubt even more against it.
Just my 2 cents.