Been meaning to reply to this for a while. As usual it looks like Rebecca (Booth11) has already sorted you out.
I’ll add my two penneth anyway. I’ve only recently got into detailing myself (around 6 months ago). I’ve bought a lot of products and read and learned a lot from this forum and the Detailing World forum. I’ll give you a short list of products I’ve used and rate.
Pre-Wash: I’ve only tried a few and not through a pressure washer either. I’ve been pleased with the results of Bilt Hamber ‘Auto Foam’ and I’ve used ODK ‘Arctic Snow Foam’, both through a pump sprayer. As Booth11 has already mentioned I think this is a very important stage and shouldn’t be missed out.
Shampoo: I’ve used 8 or 9 different shampoo’s and there's two that stand out. Carchem 1:900
http://car-chem.com/store/car-care-exterior/car-wash-shampoos/luxury-car-shampoo-concentrate-500ml and Nanolex Pure Shampoo
http://www.polishedbliss.co.uk/acatalog/nanolex-pure-shampoo.html It’s hard to say what makes these two shampoo’s standout compared to the others I’ve tried as they all do their primary function of ‘cleaning a car’. Once you’ve used a few different types you'll notice subtle differences between them. Carchem just seems to work with no downsides. The Nanolex Pure Shampoo runs it close but I don’t think it’s as economical. The best thing about the Nanolex is when you do your final rinse (with an open hose). I have no idea how this works (me thinks Witchcraft) but the water just seems to dissipate a lot quicker than any other shampoo I’ve tried so far.
Wash Pads/Mitts: I use the DOOKA
http://dooka.co.uk/washing-drying/dooka-wash-pads wash pad for the top half of the car and the Wo-Wo
http://www.wo-wo.co.uk/shop wash mitt for the bottom half. I use a Halfords wash mitt for the wheels, along with the Wheel Woollies. I also use a separate bucket for the wheels too.
Drying Towels: Again I’ve tried a few, Wo-Wo, Auto Finesse, Britemax, Gtechniq but the best I’ve tried so far is the Gyeon ‘Silk Dryer’
http://www.polishedbliss.co.uk/acatalog/gyeon-q2m-silk-dryers.html The Gyeon ‘Silk Dryer’ works better than the ‘plush towels’ and easier to look after too (washing and drying it).
The Silk Dryer comes in two sizes...
Quick Detailers: I’ve tried Meguiar’s, Auto Finesse, Bouncers ‘Done & Dusted’ and the best one being ODK ‘Entourage’
http://www.odkwax.co.uk/quick-detailer.html The ODK QD leaves a lovely deep gloss finish, smells great and the beading is great. What’s not to love?
Hopefully this may be of some help to you? I'm not going to write a review for every product but if you want me to expand on any products or areas, please just ask.