Farm & Construction Machinery ( GTE): "Oh boy, that's a problematic security. I'm going to recommend you swap out of that one for XTO Energy ( XTO) or Devon Energy ( DVN) or Nabors Industries ( NBR). Any of those is better." Norfolk Southern ( NSC): "Listen pal, you can't go wrong owning a railroad. I like CSX Corp ( CSX) No. 1, Union Pacific ( UNP) No. 2, then I like Burlington Northern Santa Fe ( BNI), and only then will I recommend yours." Intrepid Potash ( IPI): "That's a tough one. I like Potash ( POT) more than I like yours. " Mellanox Technologies ( MLNX): "We looked at this one, but we didn't find anything that compelling. Pull the trigger on Ormat Technologies ( ORA) on Monday." *For all you home-gamers, a 'mon-back opportunity means Cramer would back up the figurative truck and load up on a stock. Want more Cramer? Check out Jim's rules and commandments for investing by clicking here.