I agree with the above reply. If you don’t care which stud RB you get go with 4. You Have a better chance of someone you want falling to you in the second, since you pick before slots 1,2,and 3. If you only like 3, then go 3, etc. Know your league’s scoring, in my league last year, Gurley far outperformed the next RB. If I think he is going to repeat that, then I go 1.
Another thing to consider is who you are targeting in round 3 or 4. If you really want, say Gronk, but don’t want him in the second round, he could fall to you at the start of the 3rd round (ADP 18) with pick 21 (if you take slot 1), or 22 (if you take slot 2). He probably won’t make it to pick 24 (if you take slot 4). The same thought process can be applied if you are looking to get the top QB in rounds 3-5.
Personally, I don’t take TE or QB early unless one happens to fall to me. I don’t care which of the top 4 RBs I get, but I would like to improve my chances of another top RB or a top WR falling to me (because someone did pull the trigger on a TE), so I would choose slot 4. I can almost guarantee that someone YOU had ranked higher than #17 will be there for you, but he won’t make it back a few more spots.