Looking for a 8 channel NVR with POE with tripwire / line crossing and intrusion detection for around $200 that has good compatibility and choices of cameras. I'm not very knowledgeable on this subject. I've been looking at Dahua NVR4208-8P-4KS2 and NVR2108HS-8P-I and HikVision DS-7608NI-Q1/8P but I'm unsure which is best or is there a better option?