If I may interject- not being expert of any kind, I would think that Tafelspitz refers to a very specific cut of meat. The way I understand it, it's a part of chuck (which- I cannot tell... not that I wouldn't if I knew exactly). It comprises of two muscles separated by a sinew running right accross the cut. I woud assume that good dishes (which are those that Austrians call Tafelspitz) exploit the pecularities of this particular cut.
In my country (particularly in the region where I come from, which historically has certain culinary Austrian influences) we use that cut of meat in two principal ways- one is for beef broth, and second is for stewing (e.g. goulash, but Austrian style*). The first way produces excellent boiled beef (especially if one adds beef to the brosth when it comes to the boil, as opposed to lesser cuts of meat which are added to the pot before putting it on the stove**). The best way to eat this boiled beef is entirely personal, but in my humble opinion Tafelspitz produces most splendid beef salad, which can be enjoyed both at room temperature (in winter) or refrigerated (in summer). The recipe for this is quite simple- slice boiled beef, hardboiled eggs and onions and dress with salt, pepper, oil & vinegar.
But in my humble opinions, stews utilize this meat even better- with stewing and simmering the sinew in this cut (our butchers popularly know it as 'muscle with the line') turns those pieces into small 'umami bombs'. Sinew expands, turns translucent and soft- the mouthfeel is something like a beef flavoured butter. Should anyone be interested, I could post my father's recipe for such goulash which I haven't yet seen bested in terms of flavour and savouriness.
* Austrian dish called goulash is much thicker than (original) hungarian dish, but both have in common that the sauce can be thickened only with sauteed onions (as opposed to paprikash and pörkölt, which can be thickened with either cream or flour as well)
** don't let this 'old wives tale' discourage you from trying to get the best of both worlds (great broth and boiled beef) by putting the Tafelspitz in cold water- it will still be boiled to perfection this way. But this 'rule of thumb' says- beef in cold water is for better broth, in boiling broth for better boiled beef (BUUUUT, always cut the onion in half and sear the half that goes into the broth on electric plate before tossing it in)