hope someone can help with this discision my sr-20 has to go for recalibration will be away for 4 - 8 weeks so was going to buy a new locator as we cant be without . does the sr-60 make locates easier , faster or more exact . or should i stick with sr-20 which has worked pretty good . does anyone have any expierience with using sr-60 . we do all locates gas /hydro /sewer /water and phone .