Pete,
I have a couple of Husqvarnas and like them just fine. They are built just well enough to meet the needs of the average homeowner. They have recommendation for the amount of yard a particular unit is designed to handle. I didn't look it up, nut I imagine the YTH2448 would do fine up to about 3 acres, but, if that yard is rough with some or a combination of slopes, ditches, roots, rocks, thick grass, heavy weeds, etc., you will more likely stretch the designed capacities and workload of any machine.
A common comment that I read here is that you won't get high quality for any mower for less than $2000. It's probably so. I see differences in gauge of metal, size of bearings, steering assembly, number of grease fittings, and more. Some things are over built, and I respect and admire that, other things are designed to be adequate as necessary to keep prices down.
I think that my Husq units have been fairly simple and easy to work on. Parts are are fairly easy to fine because they are so popular. I browse eBay for parts sometimes, and have even bought used worn out stuff for parts off Craigslist before. I honestly believe they are easier to work on than the Snappers I have had.
John Deere, of course, has a good name. The L series are their entry level machines, and priced to be competitive with Husqvarnas and Cub Cadets. I have no doubt that they are very competitive with both in price and quality. I see comments that parts and service prices run high for the Deere units, and it sounds like that includes the L series, not just the higher end X models.
It's hard for me to patronize a Lowe's, Tractor Supply, or Home Depot for a piece of lawn equipment that costs as much as a riding mower. I'd rather find an independent dealer I like and have confidence in and trade there, even it means a little more money. I am just more comfortable that I am going to get better attention and service after the sale, especially warranty.
Good luck! Keep us posted.
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