Vox launches the Valvenergy line of Nutube-fitted pedals
Ibanez Nu Tubescreamer Overdrive Pedal | zZounds
Just Sounds: KORG OD-S Nutube Overdrive Kit - YouTube
KORG OD-S - NUTUBE OVERDRIVE KIT guitar effects pedal From Japan | eBay
Pedal Genie | Ibanez NTS Nutube Tubescreamer Overdrive | All Your Pedal Wishes, Granted
Korg OD-S NuTube Overdrive
Guitar Pedal X - GPX Blog - Vox's Valvenergy NuTube Mystic Edge AC30 style and Copperhead Drive JCM800 style Overdrive / Preamps are fairly decent budget options for those genres