It's an interesting question, because everyone has a personal preference – I tried to tempt someone the other day with the assortment of keyboards at my desk (blue ALPS, black ALPS, Fukka white ALPS, Topre variable, MX brown) and she thought they (except the Topre I guess) were all far too noisy, and she also demands very bouncy switches. Some people only want scissors, others want ALPS.
See, I would suggest soundproof cubes and get everyone Unicomp Ultra Classics: for coding you really want something meaty to thrash out on and buckling springs are the ultimate pound-away switch for hammering out code. A workplace with the freedom to have a noisy keyboard is all I desire – I can buy my own keyboard, I just need to know that I'm not driving someone insane with the noise.
In terms of percentage acceptance, Topre is your best bet IMO – it's pricey, but it's quiet and it won't come as shock to people accustomed to domes: it will be like heaven compared to what most of them will be used to. Cherry MX brown is quite painful to type on until and unless you get used to the soft touch it requires (the switch mechanism has a very abrupt stop upon bottoming out that you don't get with ALPS/Topre/BS). You can pound away on Topre without feeling like you're stabbing a brick wall as the domes cushion the keystrokes. No need for Topre silent – normal Topre is quiet enough.
(Soon you'll also have Matias dampened ALPS as another option for a relatively meaty but quiet PC keyboard, but that's probably too late for you.)
