I went to the Post office Shop, got two Yallo Nokia 1209 for 49 CHF in total. If you phone other people with yallo it is 5 cts/min, and free until end of december this year. Otherwise it is 25ct or 39ct (see web site for latest rates). No contract what so ever involved.
So if you have yallo friends you call, it is sooo cheap. With the two phones you get two sim cards with 5 chf on it each. See
www.yallo.ch for more info.
You can see who you called online and send free sms online, and recharging is easy. Yallo nrs start with 076 (but I do not know if Sunrise nrs also start with this).
Good luck with the hunt.