Sorry to enter the fray so late.

My budget fave is Diodes, Inc. ultrafast switching rectifiers, their number UF1007, which have otherwise the exact same specs as 1N4007.  Digi-Key sells these for 29¢, if you buy a hundred; a lifetime supply for a hobbyist.  They are not 'soft' recovery, but their PN burst is very high-freek and short duration; thus very easily shuntable.  I use a .01µF 716P on each side of the diode set (transformer and filter), and have gotten very good results; clear, fast, quiet.

How many you need for your Stoetkit? I'll send them along.

Poinz