I agree! I've got a Heys 21" plaid carryon spinner and the 25" Heys plaid check bag to match it. I love them. I have other bags that appear bigger, but for some reason my Heys bags hold more. I use packing folders and packing cubes, which making packing and unpacking a breeze, so nothing spills out when I open them. These are the ones I have:
http://www.overstock.com/Luggage-Ba...side-Spinner-Luggage-Set/3444035/product.html. I didn't pay near that much for them though. I picked mine up at Marshalls for like $79.00 and $89.00 each. They also had the biggest bag to match too, but it was too big and I didn't want it. My Heys carry on has been on probably over 20 trips and still looks great.
I also have a large LL Bean rolling duffel that I like, sort of like this one:
http://www.llbean.com/llb/shop/63916?feat=904-GN1&page=rolling-adventure-duffle-large. They don't sell the same color anymore, but mine is a really bright kelly green and I had them embroidery my last name on the side of it. No way can I miss that thing coming around luggage claim and no way can anyone else mistake it for theirs.

It's held up really well too. It's just a huge open space in the middle, but it's perfect for organizing packing folders and packing cubes.
I also have several small and large Vera Bradley soft duffels, a rolling duffel, a Get Carried Away tote, and Weekender bags that I like for carry ons. I would never check my Vera bags though.
When I was down in Florida earlier this month, I stopped in the Kipling store over in the Outlet Mall off of Vineland. They had their luggage on sale. The last thing I really needed was more luggage, but I couldn't resist a claret colored divided carry on duffel (the Teagan) and the Sherpa tote for a personal item. (
http://www.zappos.com/kipling-u-s-a-teagan-small-wheeled-duffle-red and
http://www.zappos.com/kipling-u-s-a-sherpa-carry-on-tote-red). I had used a large Vera Bradley duffel as a carry on and a small Vera Bradley duffel as a personal item going down there, so was able to squish the Vera Bradly duffels into my checked bag on the way home, so I could bring my new Kipling bags home. I really wished I had picked up the large Kipling Teagan to use as a check bag. I plan on going back down there in May and will do carry on only, so that hopefully I can pick up that large Kipling Teagan to match my other carryons.
I love getting new luggage, but really need to get rid of some of mine.