We've had our 360RB for two years now and about 17,000 miles. Never seen a need for a steering stabilizer. Handles really well, even in high winds. So far as things to look out for, just browse the Legacy forum and you should get a pretty good list of possible concerns.
2015 Legacy SR340 360RB
2014 Jeep Wrangler Unlimited Toad
Gigi, Poppy and Sadie Lady...On the road, but not full time!