i would like to wait and watch because the international lounge access network on the rupay jcb card is very narrow and if and when a international lounge access programme is announced for visa network, it would be much wider. the upi feature for a premium card doesn't matter if they are not rewarded because for upi you can take any ltf card. the rupay variant is not a wellness card so no extra benefits. Visa variant will have a better international acceptability as compared to rupay variant.
i personally have a mastercard variant and will decide about the network change after the official announcement of the international lounge access programme.