To me T4 is better than T11. At T11 all you see is the front straight and the pit garages. At T4 you see the exit of T3, up through 4 and the the straight and entry to T5. T4 also has a big screen.
And if you are interested I have a couple of T2 luxury suite tickets for sale since I can't go this year.
07 Yamaha R6
07 KTM 950 Super Enduro
04 KTM 250exc- plated two-stroke
01 Kawasaki KE100
74 Honda MR50