Any NVRs out there people *like* rather than tolerate?

I've been tasked with replacing our security camera NVR. We've currently got a 16 channel Hikvision unit that (while being a major step up from our old java-based D-Link DVRs) is a pain in the butt with it's requirements for proprietary video plugins and management software that demands local admin rights.

Fortunately, we have contractual obligations with some of our customers that prevent us purchasing any additional Hikvision equipment (NDAA concerns), so our need to upgrade to a 32 channel unit gives me the perfect excuse to ditch Hikvision and our current NVR.

Does anyone have any recommendations for an NVR that works with modern web standards, can be fully managed without specialized software (or at the very least uses software that's not stuck with Windows 98 security practices) and has basic motion-triggered recording features?

Also, we have a number of cameras we don't want to replace just yet, so ONVIF compatibility is a must-have (though I imagine that's fairly standard at this point).

EDIT: I have to admit, I'm a bit surprised by all the software-based recommendations. On the one-hand, it makes sense that a pure software solution would offer the best features and widest camera compatibility. On the other, I'm really disappointed at the idea that there's so few decent turn-key appliances out there.