Duora 8XP Alternatives
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Astrox 88D Pro is the one I would pick from your list. If you are a member of any clubs see if anyone will loan you their racquet for a knockup.
If I was to go outside of your list and suggest one, I would suggest
Astrox Nextage. Price point is amazing for what it is. Shaft isn’t too stiff (mid flex) and it’s the doubles racquet I have moved over to after playing doubles for ~2 years with Nanoray 800.
You didn’t state what tension you have been stringing the duora to, so I assume you aren’t going as high as 35lbs.