Anyone know anything about disc brakes?

Will I never fucking learn?

Those SLX brakes I bought for my Hummus have a leaky caliper up front.

Thankfully I still had the BB7s hanging around all setup so slapped the front one back on and salvaged the day's riding.

Question is, do I

• Chuck money at the problem and buy a new caliper to replace it with.
  
• Swap the rear caliper to the front and use the brake on an upcoming street trials bike build
  
• Douse the fuckin lot in petrol, throw a match at it and watch it all burn why chanting "I will never buy (used) hydros ever again" over and over?
  
  

If I decide to buy a caliper, the new stuff is all banjo fittings on the nicer levels, Deore looks to be the 'straight in' type fitting, reckon the threads will still be the same and I can just unscrewthe hose from the slx caliper and whack it in a Deore (possibly needing a new olive etc of course)?