Delta printers, update me please

Hi, I've been out of the loop for around a year now... My first and only printer was a Prusa mk1, Gen7, Teacup (then Marlin), J-head.

I wanted to build a Delta and the last plans I had were for a Reprap 3DR, RUMBA electronics, possibly convert to 3 head printing down the track. At that time I believe the only firmware that wasn't extremely experimental was Marlin modded to delta.

So what I was wondering, has there been anything better or cheaper, or both, that has arrived on the reprap scene since then? What are the latest designs you're using?

Thanks,
Thomas