hi all, due to finance problem, i had to downgrade my camera equipments... I was using sony a7s, 35mm f2.8,Nissin i40 after selling my gears, i bought a Sony a6000 and sigma 30mm f1.4 lens. The combo is nice but just lately fujifilm has caught my eye. i can afford to swap my camera for a X-T1 with 23mm f1.4 lens or i could get a X-T20 with 18mm f2. Having said that, is it worth it? would i be gaining any image quality or High iso performance?