Have not tried the Corsa's, but have just fitted a pair of Master's (700 x 23c) and first impressions are good. Excellent comfort and grip, currently with 100 psi front and 110 psi rear. They do ride and feel very nice on the road. Fitting can be slightly more awkward than usual clinchers (tight fit) but managed mine without too much trouble with some careful use of plastic tyre levers. However, I think Veloflex recommend fitting them with fingers only, so I am told!
Not sure if the Corsa's and Master's are essentially the same tyre except for sidewall colour?? Don't know.
Had a short ride earlier this evening, had been raining earlier and some of the roads were a little damp but tyre grip seemed very good. From a visual point of view, I do like tyres with a tan sidewall colour, bit of a traditionalist in that respect I guess! (Although the tread colour I went for is ...... er ...... ahem ...... a bit 'loud' possibly!!

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