forget about collector's or whatever...ANy car that is mass produced in quantities greater than 500 is NOT a collector's (that includes variants of a base car, e.g. there is no way in hell the 996 TT S will ever be of the same status as the 993 TT S where only 180+ were made)
I would get the nera mainly because the non-LP murci already looks outdated while the G is still somewhat fresh (unless you live in Dubai LOL)

 

Love the Nera in person. Interior is great. But, of course, go look before you buy.