[TenTec] TenTec vs. INRAD Filters - who's design/package is best?

[Don Jones]

OK, so I am looking at the OEM TenTec Filters in my Omni 6 and they are
matched crystals (I assume) on a piece of G10 circuit board material.
I look at the INRAD filters and they are inside a nice Faraday cage (metal
can). 
My question is simple with cross-talk in mind, are the metal can filters a
better design? And more importantly, is there a measureable difference in
performance?

Don Jones KO7i
Arlington, WA