I like Lumion.
Artlantis is the best in my opinion.
Surprisingly there are actually quite a firms out there who do the renders for you (outsourcing).
Quite a few rendering software out there but not always compatible with all BIM software's.
For me I use artlantics 3.0 what you just need is to download the revit plug in from artlantics website and then export your work to artlantics.is much more easy to use and those not require much skills.combine it with a little photoshop and see the out com.you can visit www.avatconcepts.com.ng/photogallery.php to see works done with it.the good thing is that it saves time.contact me for any assistant.
V-Ray.