Oh I got some yankee candles, just the small ones and burned them this xmas, the really really smelled. They were even strong just out of the wrapper, just on display. Although i did burn them quickly, they were not sitting around a lot.
I also got an airwick or a some such one from tesco (with a plastic christmassy sleeve round it) that was surprisingly good, it still smells now. Ive never been impressed with those ones before but these were great. They have them on sale now for about £2.50 in tesco, so im going to get a few extra.