Lol, "Power Bass Rock Strings", that must win worst string title ever. No doubt great strings though, give them a go so you can be the guinea pig for us

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As far as the Rotos go, I wouldnt expect much longer bright sound from any other non coated string. I learnt the hard way by getting some Rotos fairly early on, then switching around to find something that lasts longer. Nothing did, then I went back to Rotos.
As has been said before the bright sound on the Rotos does go quick,
but this does on any string I have tried. I'm not saying Rotos last a long time, just compared to most others they arent
that bad life span wise. The difference being the other strings dont sound half as good as the Rotos when new

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Sorry not to have been more help with the TI's, just thought the Roto stuff may be relevant for you, if you havent switched about too much.