Hi guys,
I can't really share my growing experience for x Lady Pauline and maxima x fusca coz I don't grow them... yet.
For viking, what Fauzi and Ali said true but to a certain extent. If the pitcher is hidden from direct sunlight, it'll produce a nice red coloration but if the plants is not getting enough sun, the pitcher shape will be slightly enlongated, not as round as what many of you have seen in the web. You need to strike a balance of these 2 factors to really get some nice looking viking's picther. BTW, viking can take full sun.
For albomarginata, they like their media on a drier side, so you don't have to water it everyday (depending on what media you use). They also can handle full sun, but if you just got it from Fauzi, I suggest you slowly introduce it to full sunlight if you wish to do that.
Hope that helps.