[porkynator]

1.
Scramble: R' U' F U L2 F2 D2 U2 L2 B F R U F U2 B' U' L R' U2 B2 R' U' F
Solution (1hr): U L B' R' D F' L U2 F' B' L' F2 L' U2 B2 U2 F R2 U2 B F' U2 B F U2 (25)
Solution (no time limit): U L B' R' D F' L U2 F' B' L' F2 L' B2 U2 F' L2 D2 L2 D2 B2 D2 F2 (23)

Spoiler (Click to View)

U L B' R' D // EO (5/5)
F' L U2 F' B' L' F2 L' //DR (8/13)
U2 B2 U2 F //HTR (4/17)
R2 U2 B F' U2 B F U2 //Finish (8/25)

I used that suboptimal HTR (the U2 is useless) because I could not find a good finish from the 3-move one.
I found 5 minutes too late:

U L B' R' D //EO (5/5)
F' L U2 F' B' L' F2 L' //DR (8/13)
B2 U2 F' //HTR (3/16)
[s1] B2 R2 B2 U2 * R2 [s2] B2 //3e (6/22)
* = U2 B2 U2 R2 U2 B2 U2 R2 (8-6/24)
[s1] = [s2] = S2 (-1/23)

2.
Scramble: R' U' F R2 B' L' F2 D2 L B2 L' D2 F2 L2 D' L R2 D' U B F R' F2 R' U' F
Solution: U2 F D2 R2 B2 U2 B' D2 R2 F2 D2 B2 R' F R2 U2 F B' L' D' U' F D2 B' (24)

Spoiler (Click to View)

(B D2 F' U D) //EO (5/5)
(L B F' U2 R2 F' R) //DR (7/12)
U2 F D2 R2 B2 U2 B' //HTR (7/19)
D2 R2 F2 D2 B2 //Finish (5/24)

3.
Scramble: R' U' F D' R2 B' F2 D2 R2 D2 L2 B' F L2 D F' D2 B2 D L' F2 D R' U' F
Solution: R2 F U F R F2 B2 D2 R' U2 R D' R2 B2 F2 D2 F2 L2 D' B2 D' F2 L2 D2 (24)

Spoiler (Click to View)

R2 F U F //EO (4/4)
R F2 B2 D2 R' U2 R //DR (7/11)
D' (D2 L2 F2 D B2 D) //HTR (7/18)
(L2 F2 D2 F2 B2 R2) //Finish (6/24)

25(23), 24, 24 = 24.3(23.7)