Thanks @BradFord. Let me know if you end up trying Nisei and how it is.
For Taiwanese beef noodle soup? My favorite right now is probably Cindy’s Kitchen. Get the Half Meat, Half Tendon version with Thick Noodles (you can choose Thin if you prefer). A huge thanks to @ipsedixit for that great rec.
Corner Beef Noodle has been in downhill alert for us (and a few friends in the SGV as well). I think during the pandemic / current, their turnover was lower and their product suffered. The beef shank and tendon sometimes tastes old (like it was made in a large batch days ago and reheated). We went twice over the past year or so and it’s not the same. Their Wontons also suffered. Very sad.
If you get to try Cindy’s let me know what you think. Enjoy! 
