I had a pretty good experience with Clove: ordered late Monday night and phone was in my hands Friday evening. Their credit card security measures were over the top and contributed to a day's delay. I had to call them to convince them I was legit. My advice to anyone who orders from them is to do it during the (their) day and be ready for several emails and phone calls. They wanted information from my credit card issuing bank that the bank would not divulge, hence the need for a phone call to the U.K.
Another word to the wise: Clove's currency calculator from Pound Stelling to USD was off by about 12%, so my actual price was $70 more than their web site estimated.
Great service from DHL! Despite delays from Clove (order processing and slow to give it to DHL), DHL was super fast. And I didn't have the foresight to give them instructions to leave the package w/o signature, so I came home to find a notice on my door that it would be delivered on Monday. AGHHH! But I called DHL to see about airport pickup and they graciously offered to redeliver that night. As I said, above and beyond service.
I spent Saturday rooting and configuring, which is an ordeal with Sony phones, but the threads on XDA worked after some sweating it out. All-in-all, it looks like a winner. Next up, an Xperia Z2 Tablet, probably from Clove when it's available for pre-order.