Been thinking of trying sumos. I feel my deadlift is almost good, but not quite there. I still feel slight strain on my back, not a lot, but just a tiny bit. What are the pros and cons to both? Plus my knees always hit my arms on the standard deadlift, my arms will brush against my knees making my knees go in alittle, which of course is bad. I tried putting my feet closer together and if I do that I can't preform the lift and if I move my arms farther out it feels awkward like it's putting my wrists in a bad position.