If you're looking for a true feel of Mars, you're better off reading the introductory sections of "Red Mars". Landis' planet left me with only a very superficial impression, and for this reader, lacks any real feel of adventure or wonder; perhaps this is his aim, as he is concentrating on the human characters, but these too are pallid and largely uninteresting.
The pace of the plot suffers from interpolated biographical flashbacks, which on occasion have something of interest, but largely get in the way, and although he tries to add depth to his characters, I found none of them sufficiently compelling to care what happened to them. Landis does help us out here, by getting rid of a few of them during the narrative, but I only felt any sort of slight involvement with one of the victims.
This is a lightweight read, enjoyable enough, but suffering from too many coincidental events, and unlikely bootstrappings. Fortunately, it is so structured that you can miss out quite a bit if you dislike the biographies. Don't expect it to surprise or inform you if you are already a Mars buff. I don't know if Arthur C Clarke read the same book as I did, but I would advise you to be wary of the blurbs. "Epic" this isn't.