I turned my a600 on tv, but is so bad. What is the best monitor I can use with my a600? Should I adapter pc vga monitor on my a600? What adapter I will need for to do this?
If you TV has a SCART connector use an Amiga 23->Scart cable and the difference will be noticeable.
If you want high quality on VGA monitors you should choose an Indivision ECS.
Anyway the rest of comments are right: 1084s rocks for PAL Amiga stuff and are fairly cheap :-)