Since the topic of Tasco has come up, I'd like to point out that we're covering a lot of ground when we talk about Tasco.
I have several Tasco 3-9x40mm scopes from the Japanese days, and a couple of Tasco MAG-IV 4-16x40mmAO scopes from the Japanese days that have given sterling service over the years...
When the Lumina series came out (about their first scopes manufactured in the PRC), I bought a couple and had them replaced a couple of times before finally junking them like they deserved. They were absolute junk. I have a feeling that the move to Chinese manufactured scopes is what finally drove Tasco into Chapter 7...
Personally, I won't touch Chinese scopes. I buy many Chinese products that provide great quality for the money, but, in my experience, scopes aren't among them...
The current Nikon scopes using Japanese optics but assembled in the Philippines are great scopes.
The few scopes that I have seen that were manufactured in Taiwan were great values.
The few that I have seen that were manufactured in Korea were quite nice.
The Chinese (PRC) are still struggling up the learning curve when it comes to riflescopes. I have a feeling that the products of some Chinese factories might be decent but, since you never know what factory produced the one that you're thinking of buying, you can't separate them from the junk ones from other factories...
I don't know where the Swift scopes are made and I've never used any, but they have a decent reputation and the ones that I've examined looked quite nice with bright, clear optics. I might try some one of these days...
Anyway, that's my opinion and we all know what opinions are like...
Forrest