I wouldnt call it dated. The TK with the same engine as the XHP, has slightly more hp, and torque. Has a ROC almost 1K more than the XHP. Weighs about 1 K more, more tractive effort, more ground clearance (considerably more), higher lift height, more reach, more bucket breakout. The only thing the TK does not out spec the CAT is in HF hydraulic pressure. The CAT bests TK by 500 psi. TK says they have improved the ride and made it more quiet. I doubt it can match the ride quality of the torsion system that CAT uses. It is awesome. I cant compare the cab, but TK looks very nice, and the CAT cab is also nice (except the floor to seat height). TK continues to use pilot controls, certainly more durable than EH, perhaps better feel, but does not give you the options that EH can give.
This machine is all new PA, it wont be on the ground until April. I don't think you can compare previous TK machines to this one. CAT may still be a better machine for you, but for me, I can get a big machine with crazy capacity for 20K less than the XHP. I really like the torsion suspension, it was the best part of the 299 that I demoed, but CAT pricing is just ridiculous.
Now that there are larger and more powerful options, perhaps the price on the XHP will come down.