Scratched discs - what do to?

I can't be the only person with this problem. My new GamuT CD-1 is wonderful, etc. (see my system), but it is sensitive to scratched discs. Email from the designer indicates that he decided on sound quality at the expense of robust correction (which, I guess isn't 'correction' so much as 'guessing').

Unfortunately, I have a good number of old discs that have been around the block a time or two--lent to friends who leave them out and stack them, caseless; carried around NYC in sub-par cd wallets (mea culpa); dropped, forgotten, lied to...

How can I fix them? I have heard of a number of products--potions, polishers, scrapers...

The following is a purely ad-hoc list of possible solutions. Can anyone comment? I'd love to just buy one that works instead of building a library of products that don't.

Novus #1 Plastic Cleaner
Novus #2 Fine Scratch Remover
Novus Perspex polish
Allsop cleaners ?
Brasso polish ?
Discwasher CD scratch repair kit (cleaner and polisher liquids)
Discwasher CD Cleaning system (turntable thingy)
BlueNote Galaktos CD treatment
Nitty Gritty Pure CD Fluid
Auric Illuminator kit - gell and pen (does this fix scratched discs?)
Mapleshade Mikro-Smooth polish
Mapleshade Optrix (enhancer?)
Finyl cd cleaner
Disc Doctor - Miracle CD Cleaner
Walker Vivid Cleaner kit (marketed as an enhancer, not a scratch remover.)

I'm leaning toward the Mapleshade combo--they seem to have good feedback on their website (not surprisingly), and the products seem fairly priced. Anyone here used it? (Anyone used their Maple platforms?)

Thanks. I will report results back here.

Regards,
Chris