When I was shooting at Anfield I bought 2 Peli cases, the 1510 and the 1560, the 1560 was great as I could fit my 400mm 2.8 lens in it alongside my 2 Canon bodies and the 24-105mm 2.8, the 1510 was great for times when I didn't need to take the 400.
What I noted, and this may be very specific...