I work on 757 and have 3 engine type ratings going with that (RB211C and 211E4 and the PW).
The E4 gets my preference. In fact I've never ever had trouble on them. The PW is second, and the RB211C is a dirty little engine. Fan trim balancing problems, oil contamination into bleed ducts, the cowlings never close up like it should, and it makes you deaf during windmilling...