Campagnolo 11 speed cassette advice

I am looking at installing a new Campagnolo cassette on my bike soon with the aim of increasing my maximum sprocket size from the current 27 to 29 teeth. Campagnolo now has three 11 speed cassettes covering either 11-29or 12-29 and all with similarish prices (especially when on sale) - Potenza, Chorus and Centaur (which is a bit cheaper usually). As none of my local bike shops tend to keep anything much in the way of Campagnolo components then I have no real chance of seeing any of these in the flesh (metal?) before purchase so any advice about the pros and cons of each from someone who has used them would be appreciated. As an alternative, I have been looking online at the Miche range of 11 speed Campagnolo cassettes which come with either a 29 or 30 tooth largest sprocket so any feedback on these as an alternative would be great too!
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I run a 12-29 on all but one of my bikes (with a 34/50 on the front). That range covers all the riding I do up here (Scotland) and trips across the water to the really big climbs. I've never needed the 11 cog. A good aero tuck gets the same speed (for me).
Agreed. Chorus are expensive but compared to Record and Super Record they actually look cheap and they last well (for me).
thank you all for your input. surprisingly, while looking at the web yesterday i found a shop that has Chorus at a lower price than Potenza for the same sized cassete. No mention of weight to compare the two but the images looked very similar (although the images were not very detailed).
Would still like to know if anyone has compared the 12-30 miche cassette with one of the Campagnolo products for smooth changes etc.
I totally agree but i was trying to get some idea of what the differences actually were. Weight of my cassette, within reason, is the least of my concerns.
Cycle Clinic, have you ever paired the 12 -30 tooth Miche cassette with an Athena rear derailleur? I know that the length of the rear hanger has some bearing on this but it would be good to get confirmation that this pairing works smoothly in all gears.