I had a block heater in a diesel that I had. It made starting easy and the car warmed up fast.
The engine heater is good for the engine and you do get heat faster. The remote start, however, allows the windows to defrost and the cabin to warm up before my cute ass hits the cold seat. Some days my car sits at work for
8 or 9 hours and the plug in is of no value, but the remote starter will be nice.