I've got the Barclaycard Premium Plus card and would like to switch my current account to the premier account. I think the sign up bonus is 25000 avios at the moment, but I'm aware there have been better offers in the past. Does anyone know of any better sign up offers that may be around or what time of year to watch out for a better offer on? I'm worried about missing a better offer, or potentially waiting for an offer that may never come.