Potential Upgrades from Yonex Voltric 7 DG?

If you had strict budget then Astrox also had DG series.
Astrox are successor of Voltric
Also had similar naming. DG 1/5/7/10
& Its come in 4U

Tho Yonex also release Astrox Play version which also 4U & also cheaper.

Regardless Voltric & Astrox play different.