Take any modern or vintage DE razor that doesn't have a reputation for being super aggressive. No slants or Barbasols and you're probably OK.
I'd suggest a vintage Gillette Tech or Super Speed, as they can be had in decent shape for not much money. If you must have modern, Merkur is highly thought of, and there's a Lord three piece that gets good reviews, and it's about ten bucks.
Anyway, take whatever razor you buy, but it away, and watch all the Mantic instructional videos. Watch them a few times, and then spend a few days building lather with whatever soap or cream you go with, and continue to shave with your current razor (assuming it's not electric). Then bust out your new safety razor and away you go.
That's what I'd do if I was starting over.
edwin jagger EJ89 OR 89L. same razor different handle. great razor!!!
go SE, you wont regret it..