depends entirely on how it's cooked
grilled hotdogs are pure love, 10/10. put ketchup, mustard, relish, pickles, anything you might put on a hamburger you can put on a grilled hotdog.
microwaved hotdogs are moist and bland. 5/10. if you're microwaving it, you likely dont want to put any additional effort in besides maybe some ketchup.
boiled is a nice middle ground, if only because it takes more effort. 6/10 because if you take the time to boil it you'll more than likely be bothered to put something nice on it.
also pork and beef hotdogs are very different tasting. Beef is more distinct and meaty, while pork is more "general" if that makes sense
for the best hotdog experience, buy expensive ones of either composition.