Tyrol does a nice pipe and their rails compare favorably with the surrounding area. Jumps tend to be a bit smaller than Cascade's. There is definitely more of a park atmosphere at Tyrol. It's a fun place.
While at Tyrol ask about the http://www.skiingwisconsin.com
coupon book. $79 for tickets to 12 different areas (one day each). You can buy it right there at Tyrol and use the Tyrol ticket that day.
Alpine Valley has added another run for their terrain park (total of 3). Not a lot there yet, but their park should be the best yet.