I can't really comment on Rome; but I do have Union PBR which is kind of in between the contacts and pros.
The Union straps are a hit and miss with people. The toe straps either fit really good or really bad. Lucky for me, my toe straps fit on my boots. Another bad thing, it the strap length and rackets arn't that good. I have size 9 nikes and med bindings. My strap is in the smallest setting, and when I tighten it; it maxes out.
However, these are my go to bindings. I figured I would only use them in the park (because they are great in the park). Buy I even use them for big mountain, because they are just so playful.
As for cap vs toe strap. There was only one instance where I was force to use the cap strap method (because I was using older smaller boots). And I did not like it at all. When you are using the cap strap method, it just feels like only your top strap is holding you down.