I would prefer D-Lo to Dinwiddie. I think he is a much better shooter, younger, and more upside. I like Dinwiddie but I think we need a better 3 point shooter next to Donovan. Almost every advanced stat also shows D-Lo as being better and is 3 years younger.
Honestly I think I prefer D-Lo to Harris. I think its a bigger position of need and harder to fill. Finding a stretch 4 is easy. Plus we already have Crowder who was pretty solid at that position. But I would be happy with any of the 3 I guess. We also have Royce who can play some 4. But there are lots of cheap PFs that can fill in as well. Mirotic might be too expensive but he would be a great pickup for us. But Thaddeus Young, JaMychal Green, Mike Scott(could also be backup Center as well), Jabari, or even Dante Cunningham could all be solid cheap pickups at that position. Oh, plus we have Niang that I think is improving.