I admit you could get tired (worn out) of the same piece of work after listening to it for so long. I haven't listened too many of Dvorak's other products, other than the "most well known" ones, so I'll try the ones you recommended.
No. 9 really wore me out these days after I was exposed to it for almost 30 years. For his symphonies, I would also suggest No. 7, and No. 8. If you really fall in love with Czech folk music, give a listen to his Sym. No. 8, and his piano trio No. 4 "Dumky" which is in memory of his mother. Among symphonies, try to find those conducted by Kertesz from DECCA and Kublik from DG. In my own opinion, the best performed No. 9 is by Ancerl and Czech Phiharm. released by Czech label Supraphon. Following is the most recent incarnation of this 1950's performance:
I'm glad you enjoyed the recording (sorry I can't type in Chinese now -only have a few minutes free time between meetings).
My son is the 7th chair in the first violin section (you can't see him very clearly from this angle - His image was much more visible in the ecording of their Christmas concert - I had a link at the end of this post - in fact, he's on the "cover image" of that youtube video I posted).