I really like Xen-Tans range. I have only used the lotion ones so far since that's what I prefer but they do mousses/sprays etc as well. I found the colour is very olive toned, lasts about 5 good days, applies evenly and most importantly imo, it doesn't smell fake tannish.
Most fake tans I've tried smell okay on application but once they've developed or have been on a while (In the case of gradual tanners) they smell really really bad, Xen Tan smells great on application (Vanilla), then the smell just totally fades to nothing!
If the smell of fake tans puts you off, I couldn't recommend Xen-Tan highly enough

They also do a Scent Secure moisturizer which is supposed to neutralize the chemical which is responsible for *that smell*, I plan to try this with the cheaper gradual tanners at some point but at £25 it just seems a tad pricey for now.