Hi
iPi software supports several models of depth sensors which are listed in the docs
http://docs.ipisoft.com/Depth_Sensors_ComparisonKinect v2 is still the best one in terms of quality and accuracy. Its main downside is that only one sensor can be connected to a single PC. So if you plan to use multiple sensors you need a separate PC/laptop for each one and use distributed recording.
http://docs.ipisoft.com/Distributed_RecordingIf you're looking for the best possible results you can achieve with iPI then also consider a color cameras option. You can get more accurate results and bigger capture area than with depth sensors. However, there are some downsides as well.
http://docs.ipisoft.com/Multiple_Depth_Sensors_vs_Web_Cameras_vs_Action_Cameras_Comparison