tough call with the SR8 vs ML 8, I havent used the ML enough to know.. the stealth will get you a bit more coverage, the ML seems to be more accurate on the depth ID, but depth is still up in the air, I have gotten deeper with the stealth, but like I said havent used the ML enough to know. The 5 is very handy for me, and I use it a lot, is it neccesary? not unless your trying to get every target you possibly can, but if the majority of your hunting will be in large areas or areas without tons of iron trash and brush, you can probably live without it and the 8 will be good enough.. still havent gotten out with the WOT, so cant say anything on that one