Buy tubes from Audio Research or not


I need to retube my amp and I'm having trouble deciding whether I should buy my tubes from Audio Research or buy them on the open market. If you have any experience with this I'd appreciate your help.
taters
Taters,

I seem to recall that ARC had some provision in their warranty that stated that the use of non-ARC tubes may void the warranty. I recommend that you check it out before doing any tube rolling.

Good Luck!
Kurt/Taters...i have checked with Leonard at ARC and he said the use of tubes (non-ARC supplied) will not void the warranty (assuming that Taters unit is still under warranty) which it is probably not since the VT-100mkIII was discontinued in 2006 and typical ARC warranty is 3 yrs. But anyway, just thought I'd let you know that use of non-ARC tubes does not void their warranty.
I'm not under warranty. I just need to know if it is worth spending 300.00 more to buy the tubes from ARC. A tech I spoke to today said he will not guarantee tubes bought on the free market. He only will give a warranty on ARC installed tubes.
Fortunately Cmalak confirms that you do not have to buy directly from ARC. What I would have done if they would void your warranty is buy the tubes from a someone other than ARC, but keep the old tubes, so if you have a problem, you can return your amp with the ARC tubes. I don't think this is nearly as underhanded as the prices that these equipment makers are charging their customers.