I love webbing and buckles.
I used whoopies for a while and didn't particularly like the extra fiddling needed with them, but what really set me over the edge was the "shortest minimum hang" with whoopies is much longer than with webbing.
Basically, with webbing, you can hang from trees that are virtually as close together as your hammock is long (plus the length of the chainlinks and buckles). So, for an 8 foot long hammock, you can hang between trees that are 8 feet 6 inches apart.
With whoopies, you need to be able to tie a MSH in the webbing at the trees so that adds a couple of inches due to not being to snug right up to the tree with your hitch. Then, you have your actual minimum whoopie length (which for my DIY whoopies was 23 inches per whoopie). This means that your minimum distance between trees needed for whoopie slings for the same 8 foot hammock is 8 feet for the hammock + 23 inches per whoopie + a couple of inches for the MSH at each tree = 12 feet 6 inches as your minimum hang distance with whoopies.
I ran into a situation where the only trees available were 9-10 feet apart. I ended up having to double the whoopies over and adjust that way (luckily I had Dutch biners and was able to clip the adjustable eye into the biner and then slip the doubled over whoopie onto the toggle, but it was just a headache as we had night hiked in.
PM me and I can send you a pair of buckles and chainlinks for the cost of postage to get them to you if you'd like to try them out.