I got the pink one from Lookfantastic.com as I wanted to buy from somewhere that would have good service if it needed repair or replacement. The pink one specifically as it had (may still have) a heatproof mat/bag (which is large enough for it - my old one's not big enough). Don't forget to go via a cashback site if you go for it.
I don't like flat, very obviously straightened hair either, and do use the Big Hair before and after (a quick refresh with the BH gives it plenty of bounce!).
I didn't buy the cream initially. I have loads of stuff to use up. I've used Moroccanoil, the Elvive oil, Kerastase Nectar Thermique and a few other things. My hairdresser gave me a sample of the replenishing cream and I found it heavy, similar to Nectar Thermique, but a little heavier and with not such a nice smell.
I have recently started using L'Oreal Techni Art volume architect:
http://www.activebeauty.co.uk/productPaging.php?productId=9530 and am very impressed. I started using it after my hairdresser tried it on me in an effort to soften my hair (which never used to be coarse but had become rough from over-heating and colouring). My hair was softened with this even before the Steampod but it did give me a little too much volume. As a Crystal Tips lookalike, I avoided volumising products like the plague as I did not need any more pouff! This stuff sprayed in before drying with one of the oils above really works with the Steampod, though. My hair, although now straight and frizz-free, still holds a shape so it doesn't look stick-thin straight IYKWIM.
I'll feel awful if you shell out for this and it doesn't work for you like it does me, but if you have hair that frizzes easily, loses its style at the slightest spot of rain, is dry and in bad condition from heat tools, I don't think you'll be disappointed. I'm in love with it and what it's done for my hair (which, when shorter, was described as "queen mum" hair). I now have hair advert hair! I can't stop touching it as it's soft, smooth and will stay in place (even with all the touching!). I'm knocking on 50 and have good hair for the FIRST TIME EVER!!!
HTH