Bent Disc Rotor, What to replace with?

[robin]

I bent my disc rotor to within 1cm of the spokes
Crashing into rocks is foolish.

Currently I have an sm-rt53...
What should i buy to replace it?
What tools will i need to do so?

Do our resident mechanics have the tools and knowhow to help me replace it before the pizza hut ride, next Wednesday?

These are what i can see on chain reaction, but i haven't had to touch these brakes in a year - since i got the bike - so i don't know anything about them.
Deore £8 - Is this the same as i currently have?
SLX £20 - Expensive upgrade?

I think i'll be happy with the deore, but need confirmation I'm looking at the right thing before ordering.

[Nyle]

Yes replace it.
You need a cassette lockring tool, I have one.
But only go for deore no point in the other one.

Is it a centrelock for sure?

[robin]

Thanks Nyle.

I'm pretty sure it's Centrelock. It's got rivets instead of 6 bolts, and searching sh-rt53 gives descriptions of centrelock.

The Deore Rotor has been dispatched. Hopefully it arrives with enough time for us to fit it before the Pizza Hut Ride next Wednesday.

[Nyle]

If not then you can borrow a brake and a front wheel off me.