Gl2s are nice rods for the money, there are nicer rods in that price level.
GL3, well ..... being so close in price to an IMX I 'd rather go for an IMX.
IMX, "best bang for the buck" ( yeah a 230+ best bang for the buck : ) in the GLoomis line.
GLX, the crème of the crème of the GLoomis line.
Nowdays about half of my GLoomis rods are GL2s, good rods where being able to detect what the fish is thinking when watching a bait is not a must ( cranks, spinnerbaits, topwaters ), the other half are IMX where being able to detect what the fish is thinking when watching a bait is a must ( worms/ jigs ). Got a GLX and I swear I can 't feel difference sensitivity wise between it and an IMX .... but that 's me.
I 'm not familiar with the Mossyback so I can 't comment anything.