I would opt for texecom all the way, and look out for Texecom Connect which will work with your chosen variant of texecom panel
once releasedif it's ever released to the public.
Hardwired is best especially for the siren & keypads. Wireless is extreamly good these days but will never be as good as hardwired.
Shock sensors have their place the same as any other detector, it's the job of the installing person how to do the job correctly, therefore negating to a great extent the possibility of false activations.Aviod shock sensors, for the reason being, how much vibration will a potential intruder make? The shock sensor has to be calibrated to a set level, now if an intruder manages to force open a window with little vibration then they are in without activation! So we cablibrate it to become more sensitive then low & behold a windy day or hail storm sets them off. The only good thing is that an intruder may be picked up before entering property!