Only the
unlimited passes are speed-capped while the Hotlink MU with quotas are high speed depending on location signal reception.
It's your decision whether or not you wish to change based on your own usage, and there's no reverting back to previous plan once changed.
I'll post some screenshots regarding the passes for
Hotlink Unlimited Prepaid (HUP). Hope it'll be of help.
Hotlink passes/add-ons are the same for different numbers.
[attachmentid=10910900][attachmentid=10910901]
Whereas the
Hotlink MU might change every a few days and not same for different numbers.
[attachmentid=10910902][attachmentid=10910903]