I've not shot a bullpup rifle yet but have handled 4 - the Tavor, the KelTec RDB and RFB, and the FN FS2000. Of them I like the RDB the most so far. Best balance and best fit for me. One downside to bullpups is it seems the gun either fits you really well or doesn't, and if it doesn't you are limited in options to change it. I still really love the PS90 but not it's ammunition.

One thing I do kind of like about the Tavor is that final assembly takes place not far from me, in Harrisburg... have looked at jobs there from time to time but too hard to work around a full time college schedule. Weirdly I see very few IWI weapons in shops here, when they appear they go fast. They have however kitted out the Capitol Police with Tavors, never heard anything about how it is working for them.