I don't really have a favourite. All 3 of my PRS guitars have a different neck profile - my Custom 24 is Pattern Thin, my 509 is Pattern Regular and my 594 is Pattern Vintage. I assume my HB2 (when it arrives) will be a Pattern Regular although it just says 'pattern' neck. That being said, when I first picked up a 594, that neck felt like a guitar I had been playing for years, if that makes sense, like a well worn pair of shoes that just fits your feet.
I am not a fast shredder so don't need a super flat fret-board with a super thin neck. I am sure if I had a guitar like that, I would become accustomed to it and associate that guitar with that 'feel' and playability but I can go from playing my acoustic to playing my Custom 24 and not really notice the 'neck' because I associate it with that guitar.
I don't know if any watched the PRS interview by Rick Beato and saw Paul switch from his 'Paul's' guitar to a Silver Sky - both different guitars, more so with the fretboard radius, and just play as if it was equally as familiar and comfortable - I am a bit like that. Maybe if I was playing 3hr shows every day and/or trying to shred then I may find I want a specific neck and radius but right now, I can pick up most guitars and play. I don't like super wide necks as classical nylon strung guitars are but I guess if I had one, I would become accustomed to it and associate that feel and playability with it.
Sometimes switching guitars that have a different neck etc makes me play differently, play different thinks. Nita Strauss for example says that people who pick up her Jiva10 Signature Ibanez tend to want to shred and play fast - faster than they normally would or do. She say's it was built for speed - which suits her 'shred' so I can understand why certain necks can change how or what you play and can understand why some may have a favourite based on their style and what they play but as someone who plays for fun and personal satisfaction, I don't have a preference - I think all my guitars feel 'right' for what I do even though they do have a different neck carve. If pressured, I may opt for the Pattern Vintage - but I think that may be more because it feels more 'familiar'.