SKY is the first.
and i have no idea about the other 4.

1 poend
2 pornd
3 poend

1.ThEGoDFatheRX10
2.x
3.x
4.x
5.x

1.Tod
2.Xyligan
3.Sky
4.Infi
5.TH000

1. Sky
2. Insomnia
3. ToD
4. Heman
5. FatC

Since it is personal top 5 and not based on what they achieved i would say:
1. Insomnia (An inspiration for a whole nation and many many other players)
2. Sky (Revolutionizer and inventor of so many new strategies)
3. Th000 (Play style is amazing. Game vs Sase at ROTK was just brilliant)
4. Tod ( Always enjoying his games)
5. Infi (Has a lot of potential and beating sky not with your main race is pretty impressive)

ONLY sky .