Wilton is not out of business.
It was bought by the swiss company, Walter Meier, that also bought Jet and Powermatic, in 2002.
The entire tool group, including Wilton was bought by New York investors Tenex in 2014.
So its currently an "american" company, although only some of their products are still made here.
The main Wilton products, which are mostly US made, are cast iron vises and clamps. I think they now make those in Illinois.
Most "Wilton" brand power tools were from the same factories as Jet.
Mostly Taiwan and China.
Some, but not all, Wilton parts would still be available from JPW, the current company.
Like all the Jet tools, the higher end Wiltons- that is, their top of the line, most expensive machines- are usually decent quality, while their cheaper ones may be ordinary chinese imports. I have a 1 1/2Hp Jet bench grinder that was made in Taiwan, its over 20 years old now, and still a champ. So depending on where and when it was made, it could be just fine, and last a long time.