Stu Datafusion like Scantronic, I know nothing about the newer stuff I do know the original 9100, 9600 and 9800 were very good panels very reliable. I have a few Scanny takeovers which seem to be okay, we dont get much trouble. Detection wise I would recommend the Opex RX Quad, Opex only make detection they dont make panels or bells so they are expert at what they do we rarely have a problem with their quads, and FA's are normally environmental. With windows you would be better off going for wireless unless you are plastering everywhere, its hard to get a seismic detector to the best position on a window without some cable on show.
There are very few keypads that are modern looking, I like the Orisec one but if its anything like the Risco one it will be pants. I have an andriod flushed into the wall on my landing, to control my lights and CCTV ect I have pondered with the idea of using the smart app for the intruder so it acts as a keypad as well but in fairness its a good idea aesthetically but it wont work as well as it looks. Intruder alarm companies have some funny ideas on what they think looks good in someones house, this is why the crap diy market is so popular.