Variflow teats - any experiences?

[FeralGirlCambs]

Am combining breast and bottle, and had been using slow-flow teats. A couple were looking worse for wear so I bought new vari-flow ones. Trouble is, I guess she's been used to sucking hard to get milk from the slow ones and thus does the same with these and floods / chokes herself. Anyone got any experience transitioning between slow and vari (or indeed slow and medium / fast)?

[diyvspse]

Yes - only used them for thicker formula. I would just switch back to your regular teats!

[FeralGirlCambs]

So that was a waste of £4 then, and I still have two knackered slow-flows to replace, dammit. Ah well, we live and learn. Anyone else?