Nah I'm someone who consulted on workstation and other enterprise hardware purchases for over 5 years. I owned Mac Pros, couldn't praise them enough (aside from the price and non-top tier hardware after 2009). I know a great deal about what is suitable for people's needs and made a good living out of sharing that information. I've also owned and used all manner of workstation hardware including Quadro and FireGL/FirePro cards. I've sat, watched and analysed architects, engineers, 3D artists, illustrators, graphic designers, musicians, sound engineers all use workstations and try to get performance out of them. Now I certainly don't know everything and I've been out of the loop for a year or so, but all that experience has shown me that
workstation graphics on a Mac have never been anything other than branding. FX 4500, FX 5600, FX 4800, the 4000, the K5000 and the D300/500/700s offer what to a Mac user compared to a consumer card? Everything workstation cards are supposed to accomplish on PC Apple already offered with consumer cards and no one went out of their way to do anything extra with Quadro or these FirePro versions other than AMD making them a bit better under windows (but not like real FirePro).
Optimised drivers? Well sure Apple and the GPU manufacturers wrote them, but they didn't go out of their way to put in special optimisations that were found in Windows i.e a retail 7870 performances like a D300 and a GT 7800 performed like an FX 4500. Support and a guarantee for the other hardware? Yep - again provided by Apple. Quick response from the GPU manufacturers for driver defects? Good luck on a Mac.
I wouldn't hesitate to recommend Quadro and FirePro cards to 3D modellers using Maya or those working professionally with, what is now, Siemens NX or CATIA. I'll happily chat about whether it is worth getting workstation cards for D3D based software like 3DS Max, or if AutoCAD and Solidworks can benefit, or why it isn't worth getting one for Adobe's stuff or ZBrush. I don't have issue with Apple using the branding on the D300/500/700, the comparisons to PCs with W7000s and such were ridiculous, but that wasn't Apple's fault.
For professional use I don't even care about the price, most companies I still work with waste more per employee on other tools/hardware/expenses/furniture/software/cloud services than the amortised cost of a Mac Pro over a PC, but I felt like linuxcooldude's positive comments towards the Mac Pro's price and configuration are in a bubble of Apple's own product range, not what was available elsewhere in late 2013. The fact that old Mac Pros are often still a better choice highlights this even more for me.
I like Macs and OS X, but the build quality is the best thing about them (and the OS I guess) to me. The specs and configurations are limiting and mildly disappointing because I have always been able to justify the highest end workstation hardware and Apple haven't offered it since before the 2009 Mac Pros. The price over PC hardware isn't a big deal, but only the 2006 and 2008 Mac Pros were great in that area due to deals Intel made to get Apple to switch.
Anyway, rant over for me, but I like talking workstation graphics if any one wants to discuss that more