I've just taken delivery of some Mungdorf MKP 15uF film caps. Unfortunately I ordered the 33uF version but got sent the worng ones due to an error on the diyhi-fi.co.uk website. So watch out for that one. I've emailed them about the issue. I might give the 15uF's a sneaky try seen as I don't have to solder them. That should give me an idea of what to expect after I get them exchanged.