Neither Mahogany nor Teak is really close to a bank. For fastest exp, powercut Teaks in an area like Tai Bwo Wanna, you can get up to 75k per hour. You also have the option of burning the logs there and training FM'ing. Mahogany is bad exp. Or if you want money, cut Yews. Don't cut Maples (price is horrendous) nor Magics (way too slow). For a mix, you could do willows.