Sounds like your a curved saddle preferrer like me... The prologo scratch I found quite comfy too, but gave me more numbness than he others. I'm sure it would be different now I've got all the tweaks pretty much sorted. U would find the aliante similar in comfort, and there's quite a few cheap ones around. Pretty easy to find places that test fiziks here in Aust, so I would guess its similar in the US?
I'm not sure what your doctors, specialists, & orthopedic people are like where u are, but I've found this group of professionals the most "unhelpful" in sorting out these issues (I'm a doctor myself ironically). I had a friend (with bilateral ITBFS) visit part of our Olympic cycling medical team a few months ago and he just sent her for some physiotherapy (physical therapy), with no addressing of the causative issues (her bike fit). Sorry to sound negative, I guess I just see too many people seduced by qualifications, when someone with a good understanding of the issues, and a diligence to work though them is far more useful, regardless of who they are. Having said that, we have a lot of bike fitters over here who couldn't fit a tricycle to a 3year old, let alone a complex road fit.
It does seem that I prefer the more "curved" or in my mind "saddle shaped" saddles. I think it comes from riding an old Schwinn Le Tour for about 2 years when that was my only hand me down road bike. I just rode the bike as it was, 30+ year old concor looking saddle and all
Think that might be where my comfort with curved saddles came from, the flat one's just feel weird to me, too much like I'm bouncing on top and not anchored or secure down in the saddle.
The Prologo I have gotten a bit tiny of numbness from on one ride, I will obviously ride it a bunch more to see but the Aliante would also be worth looking at. I think the Spec Romin might be a solid fit as well since it's more curved shaped but still cut out however, although the cut outs in the past have kept numbness away there have been chaff/rubbing issues around the cut spots usually. I'm actually waiting for Spec to bring out the lower models of the Chicane that Boonen has been riding, it's only available in S-Works version but for 2013 they are releasing all the "lower models" with Ti rails and the like
Anyhow, the doctor I saw yesterday FINALLY asked WHY things were happening on my right side instead of just saying *shrugs* "it's probably just effects from your body compensating for your shorter leg"
I will be seeing a Orthopedic Surgery Doc specifically about why my right leg seems to catch or pop on extension, something is out of line or miss-formed in the hip joint on the ride side. For once a doc actually said "It's great that isn't not causing daily pain but I want to know WHY its doing it regardless because something isn't right
Also, finally commented that my illiac crests aren't even at all, right is quite a bit lower than left...
Looks like I'm headed on the right track with this one....
As for the Fizik Demo, yes there are a few stores around here that allow demo's of the Fizik saddles. The only downside is that many of them have some policy like it costs $10 a day to demo but that money goes toward the purchase etc...
Might be better off just trying to score one on ebay and flipping it if it doesn't cut it