Audio Research VT-100MKIII

I replaced the front end tubes about 3 years ago. The amplifier is starting to sound sluggish. I guess I need to replace the output tubes. Do you know anyone in the L.A. area that sells matched sets of tubes? I'm looking for top quality tubes. Price is secondary. I called ARC but they are to expensive. Any suggestions?
Upscale Audio
Tube Store or Tube Depot; I have always had good luck with the many tubes I have purchased from either of these companies them over the years.
Check out I have ordered tubes from them several times over the years, and they have always delivered quality tubes at reasonable prices. Their staff are very knowledgeable and easy to talk to. Highly recommended.