Plz feel free to C&C

Hey guys,

i was doing alot of reading and research to improve my 3D Automotive modeling and rendering skills. then i stepped into a subject that discusses using a polygon tool over a NURBS tool and what to expect using those tools. Which led me to this site. car designing have always been a hobby for me. and thanks to Blender for being a Free Tool i was able to create the concepts in the files attached!!!
After reading about NURBS tools which are the industrial 3D tools for creating body designs. i wanned to ask you guys after seeing my work which is i know still needs alot of improvement. Do i really have to switch to industrial class software or stick with Blender and try to get the best results out of it as much as i can??

Please find more renders and designs at:

any comment is useful.

Best Regards.