If 28" is the largest bag you can bring on the plane, I would suggest buying two of the smaller bags instead of 1 large one.
I bought the largest bag allowed by airlines, and we
used to use it all the time to only travel with one bag - then the airlines started cracking down on luggage weight. Now, we can't fly with our largest bag, since it is always over the weight allowance allowed by the airlines.
So, I think we have 2 - 26" bags, both roller bags, that we travel with - even then, I have to be careful about what I put in them, and I always weigh them before we leave on vacation.
I DID buy the 28" largest bag for my parents, who drive instead of fly - they really love the large bag, cuts down on trips from the car when they are unpacking!
As to luggage brands, I really LOVE our Pathfinder luggage - I shopped around for several years before choosing this brand of luggage. It is expensive luggage, that is absolutely true, but we travel 2-4 times a year, and have never had any problems with it (have owned it for at least 10 years now).
They have great wheels, very sturdy contruction (good zippers), and their pull handles lock into place, locking up to wheel the bag, then locking down in place (with a cover) for when you check the bag - I've seen SO many bags going around the baggage carosel that have their pull handles extended, bent and/or broken.
Here is their website, but their site is being updated until the FALL??? So this site may not do you any good.
Pathfinder Luggage Website
But you can find Pathfinder luggage at most luggage stores (Travel 2000, department stores) - I bought our pieces one at a time over a series of years, waiting until my local department store had a good sale on the bags before I bought.
Here's a site where you can look at the Pathfinder luggage (since Pathfinder's site doesn't show you much):
Pathfinder Luggage link 1
Pathfinder Luggage link 2
Hope this helps - good luck with your shopping!!