I've used the S23 yeast for a Pils. The beer ended up a little malty, attenuation could have been better. HOWEVER, it was still a tasty beer, and some of my methods could have been a little better. I did an extract brew without a late extract add, and I also only topped up to 4 1/2 gallons instead of 5 because the OG I was shooting for would have been too low if I filled up to 5 gallons.
To me, for a dry yeast, it worked out OK.