Sorry to hear about your break in. I've seen another two or three posts on here this week of similar stories, attempted or successful. So when I was woken up at 4am by a massive clattering sound downstairs I reached for the baseball bat under the bed almost instinctively.
As for alarms/CCTV, I can recommend the Yale Easy Fit stuff as being fit for purpose, it's very much tamper proof and even protects against burglars blocking the frequencies that the sensors transmit by. Just for the love of christ follow the instructions carefully, I went partially deaf for a day when I accidentally triggered the sounder in the kitchen when trying to change the disarm code from the stock one to our own. As for CCTV, I can't speak for the Arlo system (but I know a few here do have it), but I found that you have to pay above what might be considered a 'decent price' to get decent results. Otherwise you get cheaply built DVRs with hard drives that are prone to failing, and footage which is either really low resolution, or a low frame rate which would make identification of a suspect quite difficult.
If you were looking to combine two in one then the Yale Smart Home Alarm kits, which integrate with your internet router to allow you to remotely log in and arm/disarm, also have a PIR Sensor/Camera unit which can be set to record footage when the alarm is triggered. It can also be remotely viewed when the alarm is armed/disarmed and used as a nannycam type device.
Best of luck.