There's nothing at all wrong with Regatta clothing and equipment, some of their waterproofs are excellent quality and are really well made.
If you are on a tight budget, or simply do not care about having the right name on your equipment, Regatta makes great clothing.
Do not presume that because its aimed at the cheaper end of the market, that its not as good as the more expensive clothing.
They have been making outdoor clothing for many years, and continue to do so, they have a strong following by loyal customers who trust their brand.
Any company that can remain in business against very stiff competition, must be doing something right, they produce good quality outdoor clothing at sensible realistic prices.