Hi buttsluts, I wanna buy a new dildo to punish my painal-loving ass
My current dildo is
Head Diameter: 4cm (1.57")
Shaft Diameter: 5.7cm (2.24")
Knot Diameter: 6.5cm (2.55")
Knot Circumference: 21.1cm (8.3")

There are 2 sizes I can buy
Medium
Head Diameter: 5.3cm (2.1")
Shaft Diameter: 6,7cm (2.6")
Knot Diameter: 8cm (3,1")
Knot Circumference: 25.2cm (9.9")

Big
Head Diameter: 6cm (2.4")
Shaft Diameter: 7,7cm (3.0")
Knot Diameter: 9.2cm (3,6")
Knot Circumference: 29cm (11.4")

I wonder which one I should buy, logically would be the Medium, but I have been putting some socks on my current dild to make it thicker and I think if I get the medium it might not be much of a struggle to get it in and make me feel like I wasted money instead of buying something thicker
But I am also afraid of buying the big one and be incapable of putting it in all the way or forcing too much and breaking me as I like anal pain and take it as a challenge to be conquered
I am a poor slut who can't afford both and I'll have to pick one

Can you sluts post more hardcore images?