Loomis Mossyback and crankin rods are well worth the money. I haven't fished the Shimano line of rods but I have fished Loomis for about as long as Smalljaw in his above note. What kind of fishing to you do? If your crankin 90% of the time you don't need a super sensitive GLX, If your worm or Jig fishing you may want to make that investment.
If your looking for a good all around spinnerbait rod Loomis makes a good one but I'm sure you you can find other companies that make good rods too.
I would just stick with one with a high modulus graphite blank not lower than IM7 and would try to buy one as high as IM9. I actually own some IM7 Quest rods from ****'s Sporting goods and they have been excellent for about 50 bucks a piece. I would take these over lightning rods every time and twice on Sunday