I think CPPSRB (e.g. Eligius) is the closest to PPS that a major pool can sustain in the long run without a huge fee like 7.5% at BTC Guild
let's hope they will bring something like that.
actually I want to give PPS a second chance but don't know where to mine best.
as you said BTCGuild PPS has a huge fee - 7.5%, maybe just should give a chance to 50BTC again when the special conditions will take off. referring to "Users who were registered in the system before the launch of the new system (18.12.13) will get special conditions for mining on our pool."