Just sold my Sabre38, MkI last December and miss her terribly already. Our mast step had been repaired just prior to our purchase so it was not really an issue. They are a very well built boat, well engineered and sail very well. It has been along time since I sailed an ericson, and it was a mere 30' back in the late 70's. The sabre will not pound or float like the Ericson seemed to. A little slower to respond perhaps, but once adjusted almost no effort to maintain. I seldom heard my autopilot change on a good balanced sail.
Issues I did not like....the silly 8D battery located in the aft berth area, where you could not get leverage to get them in or out. I would switch to smaller or lighter batteries as I aged. I would go with an electrosan style head. The holding tank was a tad small for my likes. Water tankage was good. We had a diesel genny that made it real tough to get to the important engine/prop shaft things. I used a 110 watt solar panel to keep things up while in route, rail mounted. We had CNG and no problems, but others have switched to propane only because it is sometimes tough to find CNG refills. You will need to rebed the chainplates. I had some water come in from the fore end of the hatch...never did stop it, slowed it and changed the direction. V berth was tough for two 50 somethings to crawl up in and out of. This btw was the biggest reason for selling...to get a more easily used sleeping double berth.
Things I liked....quality, quality throughout, and I could still call Sabre and talk to them - on a 20 year old boat. All the hardware is top notch, easily serviceable. Wood work and joinery was all top notch. Sailed easily, frugal on fuel and plenty of room for gear, electronics and such. Good support for several week, trips. Not sure about extended. We lived aboard weeks at a time with no issues.
Survey for sure, and it is truly a buyers market out there....so don't overpay..