If you want "no questions asked" in this environment, you need to pick Java ... and as of JavaEE6/7, it's a much more efficient language. Granted that it's not as dense as Perl, but it's also type-safe and with good conventions, readable.
If you're developing SaaS, use what you're most productive with (assuming you're not productive simply because you're creating crap). I've see people who can write in beautiful Perl, and I have no problem reading it. I've also seen people who write whole programs on one line just because they can ... and a couple months later, they can't read it either. Note that I've also seen bad Java, Python, etc programming.