The best all-around guitar pedal is subjective and can vary depending on the specific sound or effect you’re looking for, however, the Ibanez Tubescreamer TS9 has been a staple in many player’s pedalboards for years due to its versatility and ability to enhance a wide range of guitar tones. It’s a classic overdrive pedal that can help you to achieve a warm, smooth, and singing lead tone, well balanced for both rhythm and solo playing. It also cleans up nicely when you turn down the guitar volume, so you can get a lot of different shades of overdrive from the same pedal.
But again, it’s important to consider what you want from a pedal, because there are other great options out there for different effects like distortion, fuzz, modulation, delay and reverb, each with their own unique features and sound characteristics.