I have built all of the Roden 1:32 scale WW1 aircraft kits and found them to be quite buildable, some more so than others. Some of their kits are good and build up to be excellent models, but others need a lot of work, but depending on your modeling skills will determine the outcome of a Roden kit.
Wingnuts on the other hand are in a class all of their own, highly detailed and very user friendly, but bare in mind that no kit, regardless of where they come from, is perfect.
The Junkers J.1 is a good new comer kit, it builds rather easily and has no rigging, the Fokker D.VII is another great new comer kit also with a lack of any complex rigging. If you don't mind trying a bit of rigging the Albatros would be an excellent kit along with the Pfalz D.III, both beautiful kits and have only very basic rigging.
Gregory has mentioned the Sopwith Pup and the Sopwith Triplane, both excellent kits and both quite easy to build, but both have more rigging and being British they have double flying wires, not hard to do but does add a little more complexity to the rigging process.
Wingnuts do their absolute best to make their kits easy to build, their latest releases the Sopwith Snipe and the Hannover virtually just fell together, and to build out of the box with no added extras they make up to be wonderful models, but their rigging is a little more involved.
Des.