If you are going to spare some keys, you may as well just go all the way and go 60%. It is true that cutting only the number pad allows you access to dedicated home, end, and arrow keys. However, once I have gotten used to the 60% layout I liked it better and when going back to the larger board it felt cramped. The 87% cuts only 3 inches or so, but the 60% cuts 6 inches, which is pretty substantial.