hi jDigital,
it seems that the new output you submit is a bit more clear.
but please try the following, i believe it would give u the best result!!
once the render is completed, save the file to "png" format and try upload to here, because if you save it using the ".jpg" format, i believe the maya use the 15% compression format. alternatively, you can use the photoshop or paint shop pro to open the save "png file" and then save it to ".jpg" because the photoshop editor allow us to scale how many percent compression we want, if you want to have nice output with ".jpg", try save it with "1% or 5% compression"