I use Peterson StroboStomp Classic Tuner for about a year now and can truly recommend it. It`s extremely accurate, versatile when it comes to tuning different tuning/string instruments, Buzz Feiten Tuning System (my Dean Caddy has it) supported, fully programmable, capo mode available (switching from e.g standard tuned guitar to C# takes no time) and it`s built like a tank. Quite expensive but it`s worth it. Great stuff.