Universal UNS-1 systems have been certified on nearly all business aircraft original-equipment manufacturers, on such models as Astras, Citations, Challengers, Falcons, Gulfstreams, Hawkers, King Airs and Learjets. The systems are also installed on numerous regional airline aircraft (including the Q400). In addition, Universal Avionics has captured a major share of the retrofit market.
Nope, not kidding! There's actually a few features of the Universal that I like better than the Honeywell FMZ series on the Gulfstreams.
I like the avionics on the Dash, but I guess for commonality they kept the same somewhat cranky autopilot as the -100 -200 -300. Does fine at intercepting a LOC if you're less than 150 knots but other than that, be careful.
Thales CRT screens are awesome, much bigger than the GIV or GV.