Short answer: yup, they're pretty good, and yup, you'll find plenty of fans here who'll testify to that.
I don't happen to be one of them, having chosen iZotope and FabFilter products for my mastering chain, but I have used the T-Racks plugins and they're quite competent. The "White" compressor in particular is a standout emulation of the legendary LA-2A. I also have the Fairchild 670; I don't know if that's part of the package but it's supposedly an accurate emulation of the compressor famously used by the Beatles on pretty much everything. If the package includes those two plus the 1176 then I'd say it's worth the money.
Don't be overly swayed by the "vintage emulation" angle, though. Sure, these are the devices that were standard equipment for decades and can be heard on all your favorite classic albums. But those old-school producers also didn't have a lot of options available to them at the time. Many of them might well have preferred modern processors if they'd had them, as many do today.