As I can recall the Sifteam-e2-ee 1.5 version is one of the best.
My expierence is that for stability, I flashed the original image, and in USB I configured 8 images. The is PKT and HDMU-image are the best. Both are being updated. Maybe you can try the USB-images.
I like the HDMU very much, because is frequently being updated and many possibilities. The PKT also has many options.