Droid Engineer Archive

Greetings D.E. people. I have wandered this way from my whiney BH forums because of the impending CH changes aka "nerf" I will be forced to get a new friend to kill things. The thought of doing something on my own is too much. I know the current Probots won't hold a flame against a cl30 mob and will just provide the mob something to throw at me. I was thinking of purchasing a "prenerf probot" (if I could find one). What do droids require to keep them operational and in good shape? Thanks.