there all very good quality, theres no strength issues with any of them just which ever you like the looks of best
I've all 3 makes over the years and don't mind which shell I have when a new paint job is needed as never had a problem with any of them just a matter of which ones are available and which ones arn't
If it was my choice now i'd go with the proline vortex or crowd pleazer or jconcepts as I had too many of the standard B4 shells and wanted a change