First thing to consider is "(If it aint broke don't fix it)".

I have only used an HVLP turbine system with a non-bleed gun (Accuspray); however, I had never used a non-HVLP system or a compressor system.

One reason that might push you towards changing is if you are having problems with water in your compressed air. Some solutions for water in the compressed air (from condensation) are quite expensive and a switch to a turbine-based HVLP completely eliminates this problem.

The turbine-based HVLP produces warm air and you would have to get used to this (and learn how to compensate for it).

I am not an expert (not even close), so I will read other replies with interest.