Do you need a another for a twin setup or just looking for a replacement?
How many cells?

I have substituted a HiMAxx 3630-1000 for a Trinity Ruby with great results on 8 cells and excellent results on 10 cells. The Ruby was a geared 3.8:1 setup and propped to 11x7 APCe prop, but was direct with the Himaxx. For a fan setup on 10 cells, I would look at the Himaxx line but something in the 1500 - 2000 kv rating.

Spar