The professional MB techs on this site may not agree, and you should of course listen to them, but here's what I use.
I own a pickle fork tie rod seperator, but I can't remember the last time I used it. I believe that the best tie rod seperator is a nice size ball peen hammer. If you strike the member in which the stud portion is fitted, not the stud itself, you can make them "shoot" out. They are tapered, if you drive against the end, slightly decreasing the size of the tapered bore momentarily that they are fit into, they will pop out. It would, of course, be helpful to remove the cotter pin and nut first.
'84 Euro 240D, 516K miles
'88 300E 5 Speed
Over 800,000 miles in