Since the diverter question seems to be answered, I'm going to be a complete oddball here and say that for some things a wider grapple can be handy. Personally I went with a 66" EA Single Lid Wicked Root Grapple for Compact Tractors on my
L3560 (for a first grapple) as it mostly covers the width of my tractor and I wanted that in the event I had to clean up severe storm/tornado damage (which could include pieces of houses or other debris that isn't tire friendly and is strewn across a large area).
The second "grapple" I bought was a Danuser Intimidator for pulling posts/trees. Between the two I can use the Intimidator to pull bushes/small trees in quick & messy pull & drop approach, and then use the width of the single lid grapple to push/rake all the debris into a pile to be scooped up and hauled away in fewer trips. The L-bottom style grapple is also is handy when I'm laying things in the grapple by hand (e.g. final clean up, or cleaning saplings/trees out of a fence line). Can't say I've run into an situation where having the single-lid vs. a dual-lid grapple has been an issue, but that's just my experience and I have haven't had to move large rocks - mostly just stumps, trees, a lot of brush/bushes and other vegetation (if it's long enough to bridge the gap between multiple tines it can be grabbed).
Have also looked at the "Add A Grapple" grapples, Igland GR 20 style grapples (which would seem great for logs and large boulders), scrap grapples (a side-less solid bottom bucket with lid) and many other style of grapples. So as noted in the original post different grapples for different folks and different methods/uses. So which grapple you get depends on what you'll be doing and (to a degree) what other implements you have or plan to get.
BTW I just looked at the Artillian website (first time in a while) and it looks the company is under new ownership (don't believe it started as a part of Curtis manufacturing) -- which to me raises a few questions since I'm no longer seeing the recommendations regarding tractor size for the products. One of the reasons I originally went with EA over Artillian was that I bought pallet forks with my tractor (new I wanted/needed them to unload future implements) and my
L3560 was listed as being at the upper end of the size range of tractor the Artillian Frame/Forks were (at the time) supposedly designed to support. Which meant I could have used them, but may have run into issues if starting doing things near/beyond the tractors limits.
From what I've seen some manufacturer's seem to rate their equipment to the max size of tractor it would handle where others (like EA seems to) will add a bit more margin in their tractor size recommendations, and some don't provide any recommendations at all leave the user to make an educated guess based on the implement weight..... personally I prefer to keep the implement under 1/4th the loader's rated lifting capacity (but not "too light"), but will go above that if/when it makes sense.
One final thought - one of the nice things about (at least some of) the EA grapples is the tines on the top lid will line up with the tines on the bottom which can permit picking up some very small items (using a top and bottom tine like a pair of fingers to pinch the item).
