We've owned 2 Jayco 5th wheels - a 1996 Designer 3030RKSS and a 2000 Designer XL 3610RLTS. The Legacy was originally an upgrade package on the Designer that replaced the XL package, and later Jayco spun the Legacy off as a stand-alone model positioned above the Designer.
Both Jaycos we've owned have been good, solid units. The only problems we've had were related to buy-out items (e.g., a Todd Engineering power converter, a Norcold cooling unit, etc.) and were handled by Jayco promptly.
Jayco has a 2+3 warranty - 2 year bumper-to-bumper and 3 year structural. You might want to see about getting the warranty transferred if the Legacy is a 2004.
Rusty (oops - posted under my wife's login!)
2000 - Texas Boomers Wagonmaster - 2016
2004 & 2008 iRV2 National Rally Wagonmaster
Texas and Boomers - we just naturally go together