Grechaninov was certainly a master craftsman, but more importantly he was something of a master of Russian late-Romantic - if his style isn't in any way original, his themes are strong and the music is usually really thoroughly endearing. The first piano trio (1906) is actually surprisingly impenetrable for the composer - there are many appealing parts, to be sure, especially much of the lyrical slower music, but the faster movements do indeed require some work to let up their goods (mostly because, it seems, they tend to be slightly overwrought). Stylistically, it is closer to Taneyev than much of Grechaninov's other music (though the usual suspects, Tchaikovsky and Brahms, show up as well) and it is, I should emphasize, a thoroughly rewarding work.
The second trio (1930) is shorter and more concentrated; it is also somewhat more individual in character and is a quite rewarding work as well - exuberant and buoyant in the outer movements, melancholic though slightly opaque in the slow movement. In between we get a very inventive, attractive cello sonata (though the latter has a rather darkly ominous middle movement). Throughout the Moscow Rachmaninoff Trio provide utterly convincing, fresh, strongly characterized performances with a strong sense both of drama and warm lyricism. The sound is very clear and well focused. I have not heard the alternative recordings of this music out there, but I do not think anyone will be disappointed with the versions at hand. Recommended.