Haha, you say tight budget, then you say Fenix TK70.
Anything Fenix does not correlate to 'budget' unless there's a 'no' before it.
There are many models of SR King (review by '_the_'), the trusted one from fancyflashlights/CNQG(both the same seller), has been measured to put out a decent 2200lm.
The Roche M170 is something I'm interested in personally, with the stepless level, especially. There has been some issues with some batteries not fitting, etc. About double the price of the SR King. Can get from FF or Intl-outdoor.
Not interested in the Shadow SL3 (review by turboBB) because it only hosts a single 26650 and burns @ 1500lm, which gives nowhere near enough burn time for my individual use.
I suggest you look at the Blackshadow Darth as well. -FF (NW) or FF (CW)
Good luck hunting.