Not easy and im sure some will say otherwise but Xeno's G-42 with XML emitter 1000 lumens OTF should be top 5. The output , throw, and size make it a favorite. Once you have it in hand its hard not to notice the near mil-spec quality. And really one of the first torches in my small collection that stands out with unmatched design and finish at this price range. I paid much more for brands similar in quality and performance.
I'm not currently interested in buying one right now, I need to finish my laser first. What I meant by reasonably sized is not one of those ones that have a handle built in and are practically the size of a car wheel lol.
iv had a couple of xml-t6 18650 1000lumen torches off of fleabay, i only paid 10-15 pounds (gbp) each. from my own experience with xml-t6 torches, id advise you to try a keygos ke-1. the newer models have silly stainless bits on them, you might like them? i dont.... also avoid cheap focusable xml-t6, the design dosnt work properly with those bigger lenses, the focal lenght of the lense is too long so when you focus it down to a dot it looses alot of light.... my keygos ke-1 wa cheap and nicely made.. if you dont like it it wont matter at 10-15£ 25$!!! i love mine!