The G1 Dinobots were never reissued. They did get a second release but that was waaaay back, still considered along the timeline that G1 is the current line - Gold box packaging. ANother is in the funky colors during the G2 era - and they weren't the fab 5 anymore just grimlock, Slag and Snarl.

Any seller telling you that the stuff they're selling you are reissues are lying through their teeth or don't know what their selling ,as these are high class KOs. Look specially at the box for Grimlock - it says Bommander - when it should be Dinobot Commander...

As for the newer dino versions, well your lucky someones getting you the expensive recolours (SDCC) and getting the missing member thru Amazon. If your after any of the 3rd party ones though... I say go buy whichever appeals to you most and can be easy for your budget.