Good choice. I went with the identical truecharge2 40 amp last year. Compact footprint...great features. Especially the equilization one, which most cheaper chargers do not have. If you do this once a month and knock of the deposits on your plates itill help your batteries last longer. Have been very happy with it.
I also purchase the Xantrex $120 echo charger this year to install. After listen to Saildog and others here I beleive that it is the most efficient way to set up your electrical system and achieve the largest usable housebank, while insuring a fully charged engine battery. I have a group 27 staring battery with a house bank of 6 Trojan 105 giving me 660 amph. Our electrical "diet" averages about 120 amp per day ( most of this is refrigeration) so without any charging from the engine or Honda 2000 generator we can go 3 days easily.