Weird timing - I see this thread was revived a couple of days ago, and my battery died this morning. Went with the 49DL (thanks for the tip, Alan). Wasn't too sure at first since the DL is a little longer than the OEM battery (a little less than an inch, I'd say) and the drain hose is in a different spot. No issues - went in quickly and fired right up.
If you loan a person $20 and never see that person again, consider it money well spent.