I was a bit rushed with my last post, apologies for that (the doorbell rang!).
Yeah, I've known Philips to use CMC and Moser Baer India, they may use others too. Philips, Maxell, HP, even Verbatim outsource their CDR manufacturing.
As far as CDRs go, both the above manufacturers are OK - it's not like Philips are an inferior or unknown brand.
But I'd still only buy them if they're cheaper than Taiyo Yuden. If Taiyo Yuden aren't an option for you, then go ahead.
The above is assuming you aren't planning to use them for long-term archiving.