If you go 150a get the ANL.
http://www.bluesea.com/resources/95Wire ampacity table:
http://www.genuinedealz.com/voltage-drop-calculatorInterrupt rating is different than designated amp protection rating.
Interrupt rating of ANL this size will be about 6000 amps and well below the CCA of your two batteries. If you had 10,000 amps then the current could be so great an arc could continue to jump the fuse after it opens. Usually this rating applies more to utility sized applications as no RV has these amps. Class T actually goes close to 200,000 amps.
http://www.cooperindustries.com/content/public/en/bussmann/electrical/products/supplemental/cable_limiter/ann_anl.html