the only thing i can recommend from ACT is the PIR. The remote (ZTH200) would be nice, too, but its firmware is very old (no SIS mode).
The switches feel very cheap (even my SO said get rid of those). The lamp and dimmer plugs have high failure rates and sometimes the z-wave connection drops out..
For Europe, I'd recommend to get a Seluxit Dongle and Merten Switches/Dimmers. The tricklestar remote would work in SIS mode, but it is a bit limited (only 2 buttons, no display). The Nuewi/Popp products also look nice, but I have not tested them yet and I think they have some financial problems.
br, Hari