I have the s27 version that Ive been using for the past year or so.
Nothing too major to report.
I run mine at just over 1 bar on the pressurestat which seems to be the sweet spot with the beans I tend to use the most while still giving me enough grunt in steaming.
I have the 3 hole tip but am thinking of trying a 4 hole - but Im not dissatisfied with the milk Im getting now.
Conductive brew head is similar setup to Silivia - so all same things apply re: temp control etc - but I feel they dont overheat as much as some e61HX if left idle for long periods. I tend to flush around 80ml (programmed button) then lock and extract.
I have a slightly recalcitrant hot water switch that needs looking at - but apart from that - no problems to report. I backflush and clean regularly - but I should get around to a descale.
I have the manual if you want it.
3Meg email attachment.