I never said they were chopped liver or compromised, just that the nitro models (and other higher end models) tend to have the better build quality and nice features, like the hidden connector on nitro+ and the magnetic fans on the XFX mag air models. The nitro+ also comes with PTM7950 so theoretically should perform better over time in terms of thermals, the Taichi for example uses traditional pastes.
The nitro+ is also not the most expensive model, and is about middle of the pack, with prices ranging from £649 to £799 on OCUK website. (Nitro is currently £720).
It is all personal preference and depends on what you value the most as to whether a card is worth it or not. If I didn't have a fishbowl PC, then I'd get the cheapest card possible and not care about looks etc.