What Has Been Undertakers Greatest Match In His Career So Far?

The Undertaker is only involved in good matches so this is a tough one. All the hell in a cells are amazing. When he returned at Wrestlemania XX and fought Kane was another great match. The Angle Taker match at NO WAY OUT 2006 was amazing. Also the first inferno match was pretty intense. I personally like him vs HBK at Royal Rumble 98 in the Casket Match. An awesome match with an even better ending.