I just took a blind plunge with a new seller from eBay for these: With this description is all: "Pair of Philips 6L6GC tubes. These tubes are new with original boxes. Markings on tubes are Canada 6L6GC. " It doesn't say they're matched but I have a couple single 6L6GC amps I can use them in if they don't match up ok. I'll check them when I get them. I only paid $43 and change for both. Any ideas about these tubes? Reputation? Anything about Philips Canada tubes at all? What they compare to? Thanks!