Stand to be corrected but I thought the xpl was the same but a smaller foot print. Personally I would go with the newest model as it may have had tweaks we are not aware of. Your really not going to notice the difference in distance in real life. The older led could have been stored for months and months....
I really do strongly recommend a vinh version, it will blow you away and will be in the uk and with you in 8 days. Worth the little wait, only down side and this is a warning.....no other lights will do from then on. I felt the same with modded lights at the start, the unknown, will it break etc . Well they don't , they are better and his warranties are better if needed. He also offers to return if not happy as well. Take a risk(no risk at all)....don't look back