When I was debating trying a Jett, someone recommended the Selle Italia SLR Lady Gel Flow as one with a similar profile. It's a firm saddle, but not painfully so- I can do centuries on it without trouble. I think it's marginally softer/more padded than the Jett that I test rode. It has a large cut-out. I liked the first one enough that I bought a second one for my other bike.

Just a tip: SI has lots of saddle collections and a Lady Gel Flow is not the same as the SLR Lady Gel Flow.

Good luck!