Blender is hard to learn, but it is super powerful.
I use Lightwave. It is not free and is one of the packages I have extended experience, so it is faster for me. Blender is always my sidekick.
Today there are many online free modeling tools that approach modeling in different ways.
Some tools are more specific to a certain type of model.
If you are looking into modeling arrows and such (according to you question on another post), you may do better using an online tool or even model it straight inside glbasic.
Here some starting places for you:
https://www.tinkercad.com/Seems pretty good to me, it is online and requires only a sign up. Check if it exports .obj, otherwise you may want to use blender to convert the final object.
http://www.sketchup.com/Seems easy to model stuff.
http://www.3dtin.com/An online one, very primitive but can get to good results.
https://labs.sketchfab.com/sculptfab/This is similar to sculptris, it is great to do organic stuff.
http://crocotile3d.com/I´m very interested in this one, looks really nice, it is cheap. I´m sure people here at the boards could do a tool like this in GLB pretty quickly!
https://play.google.com/store/apps/details?id=com.ascon.subdivformer&hl=enThis one is for android and is a subdivision modeling tool, it works nicely but you have to do final divisions on the likes of blender.
I already tested some stuff with this and it works fine.
There are many others but keep in mind it is important that your tool exports OBJ files so you can import on the DDD converting tool.
You might want to have blender around in case one tool does not export obj but a format that loads on blender and from there you export the obj.
It is all a bit tricky to people not used to working with 3d. The best tool is the one that works for you.

Cheers.