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Do some research and see what does best in your area. They all basically have the same tolerance, thats not the issue. Its know what thrives in your location and then pick out of those (just cause the variety is available doesnt mean it will thrive...do the legwork to see what is successfully being grown).
I would recommend NDM and Maha.Especially since can be kept small and even in pots for colder climates.
To me, NDM is much better than Alphonso or Mal and an easier tree to manage.
Nam Doc Mai if you can get it because it will grow smaller so more easily frost protected. Plus people will be amazed by its exotic shape. It tastes very good. Nam Doc Mai tree is well known in Florida and popular to plant in backyards. It has a good reputation here.Maha Chanok also has an exotic shape. See how it and Nam Doc Mai look on the internet.https://www.bing.com/images/search?q=Maha+Chanok&FORM=HDRSC2___________________You are at same latitude as Beijing China. Beijing climate is describes as:WinterThis city has a cold, dry and long winter from early November to the next March. The chilly days have no let up despite sunny days. The average temperature in December, January and February below 0 C (32 F). Be sure to wear wool sweaters and thick down coats for winter. Visitors from tropical countries may find Beijing weather extremely inhospitable. Winter sport enthusiasts will enjoy the snow scene on the Western Hills and combat the chill by skating in Shichahai. Chinese Spring Festival can be celebrated either in January or February. The traditional community activities in the city are quite an experience for someone arriving from outside the country.