Re: Quick! Talk me out of Purchasing a Sabre 30!
Not to throw a wrench into the works, but have you considered the Lippincott 30? I know I'm biased, but we chose it over a Bristol 29.9 with similar needs to yours. It has a similar nice wood interior to the Bristol with performance characteristics more in line with the Sabre.
Ultimately these 70s/80s production 30 footers are probably more similar than they are different so it's just a matter of choosing the one that you'll have the most fun sailing and will be the most comfortable to live aboard. On a lot of them they skimped either on the length of the v-berth or the width of the double berth in the salon, so be sure to test out whichever berth you plan to use regularly.
Beneteau Oceanis 400
formerly Lippincott 30