Will Flysimware's Learjet 35A and the Falcon 50; and, RealityXP GNS and GTN avionics work in P3Dv5.3?

I've read somewhere way back when, and I'm now under the impression that P3Dv5.3 has less issues and generally the better choice compared to P3Dv5.4. Is this true? 

I plan to run just the two planes above primarily with Orbx sceneries I had from P3D v4.5.

EDIT: How do I obtain copies of Milviz's PC-6 and C-310?  I bought these in years past and I was able to log-in to their forums but I don't see a link to download these  two planes.

Edited April 2Apr 2 by Matt Sdeel
Typos.

Hey @Matt Sdeel I don't have the RealityXP add-ons running but I do have the Flysimware F50 and it runs sweet in v5.3

Be interested to hear tho re the GNS stuff if anyone does get back to you

17 hours ago, Matt Sdeel said:

How do I obtain copies of Milviz's PC-6 and C-310?  I bought these in years past and I was able to log-in to their forums but I don't see a link to download these  two planes.

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