As far as Datacolor’s Spyder devices go, the SpyderX Elite is by far the most accurate one I’ve tried so far. Easily more accurate and consistent than my experiences with the Spyder5 Elite. So, all three claims seem to be true. It’s easy to use, it’s fast, and it’s accurate.
Curious how it stacks up against an X-Rite i1Display Pro
I also wonder that. I have the old 4 elite, and it was ok, but it would be a bit off sometimes.
I'm currently using a Spyder5 Pro since I got it on sale for $80. I kinda like the X-Rite since Dell has a few monitors that support hardware LUT calibration with just the X-Rite tool. Main reason I bought it since it's the same instrument as the Elite. I use DisplayCal for my monitor and HCFR for my TV.
It might pay to also keep in mind that gaming monitors and professional monitors used for color reproduction purposes often are two different beasts, especially if talking about professional workflow in a graphics illustration environment geared toward print. For instance, my NEC and EIZO monitors both have internal hardware LUT capabilities, but are capped at 60 Hz. The use of pro gpus/monitors which can process the 10-bit color output while using apps like Photoshop also come to mind.
Does Photoshop need a Quadro card?
Photoshop works great with a Quadro card, but whether you need one depends on if you want support for 10-bit displays as this functionality is currently not available with the GeForce series. It is possible to use a video monitor card like the Blackmagic Decklink to get support for 10-bit displays, but this requires you to "export" the image whenever you want to view it on a 10-bit display. Note that you also need to enable support in Photoshop for it to function.
according to some guys the Spyder series comes with trash calibration software.
from what i've heard, its better to pair the Spyder with DisplayCAL+Argyll to get a more accurate result.
That's absolutely correct, along with using HCFR + Arygll for TVs. All the Spyder instruments throughout the series are the same. The extra cost is for more features in their software. Software can be upgraded at a later point in time for extra money.