Re: SH-6 or PATB2
Very strange that you ask this now. I have both and still did not decide what too choose.
The PATB-2 is darker and more bassy, the TB-6 has a brighter tone.
Both are agressive, but i think the PATB-2 has more output and suits more metal riffs, while the TB-6 suits for riffs and shredding.
The PATB-2 sounds more modern to my ears.
Maybe it might be too dark for your (already darker sounding mahagony) guitar.