As far as an awning is concerned are you looking at new, or used (used are about and at this time of year you coukd find a bargain on ebay etc.
What's your budget?
Most important is don't even think of an air awning, you need a poled one.
Like most things in life, you get what you pay for and that holds very true for awnings. The ultimate are Isabella, and their prices certainly reflect that (some are over £3k) then there are other makes such as Dorema and so on. Asking which one you should get is like asking what bed you should buy for your home, it's a highly personal thing.
If looking for a new one try and find a showroom that has the erected so you can see the various makes and designs.
The same really goes for the awning flooring. There is awning "carpet" which isn't carpet at all but basically perforated plastic sheeting. Again price dictates the quality, if laid on shigle or similar thats not very kind on your feet. So if onntgat sort of surface some people use interlocking plastic foam "tiles" for awning flooring. Some people go the whole hog and lay paving slabs! Or choose something between the options.
My advice would be to not be in too much of a hurry, think very carefully about what you want, and how much you are prepared to spend, look at all the various options that are available, if possible "in the flesh" and decide from there but DONT RUSH
Good luck and good hunting.