I've tried a bunch of much-loved pedals: Wampler Ectasy, Barber Deep Fryer, SFT, VMT, Joyo UD, and others. To me, the [sfx] Micro Red Dragon sound the most like a low-gain tube amp: subtle, warm, and touch-sensitive.
Believe it or not, I also really like the Ibanez TS9DX Turbo Tube Screamer. At low-gain settings (gain knob around 9:00), it adds a bit of warmth, without significantly changing the sound. Mine has the Analog Man Silver Mod, but the stock version sounds really good, too.
Believe it or not, I also really like the Ibanez TS9DX Turbo Tube Screamer. At low-gain settings (gain knob around 9:00), it adds a bit of warmth, without significantly changing the sound. Mine has the Analog Man Silver Mod, but the stock version sounds really good, too.