Flora,
I have spent dozens of hours in the Spring digging dandelions. I know it sounds crazy, but it is like meditation for me...the feel of the cool Spring earth, the Spring breezes. It's a great way to spend a bright afternoon.

I have tried so many dandelion diggers and spent plenty for them. None were perfect till I found a sturdy, well made vintage dandelion digger at a thrift shop for pennies. The one with the small 2-prong fork at the end of a very sturdy tang. My tang is square; I think that adds to the sturdiness, so it won't bend when using plenty of leverage.

I have used the Daisy Grubber.
http://www.landrethseeds.com/catalog/product_info.php?products_id=5145
I really like it, but you have to be careful not to use too much torque, or you will bend it.

As for the Fiskars tool. I personally never found any of there tools to be well made. All of mine seemed to quickly go into disrepair and made their way to the garbage.

This year I had very few dandelions. The most effective therapy for weed ridden lawns is to mow high. I know it looks unkempt. But trust me, it gets better. I started mowing at the highest setting three years ago. I really saw the difference this year. BEAUTIFUL carpet of green grass and weed free!

Good luck!
Luther