From what I've seen, TOZ and Baikal can make some decent products. Baikal, especially, is underrated, IMO. (TOZ actually makes more of the higher grades, but doesn't get maligned as much as Baikal - hence Baikal is more underrated.)
Both these brands produce solidly built, reliable shotguns. TOZ-branded models are usually better finished than Baikal, but both brands appear to keep their prices low by minimizing finishing labour. By comparison to much more expensive brands, metal tends to be roughly finished and wood poorly fitted. This is probably what has led to the less than stellar reputation of these 2 brands.
Despite their reputation, though, they are usually a very good buy for the price. The Chinese competition, for example, offers clones made from poor quality wood and metal at comparable prices.
Last year, I purchased 2 Baikal SXS with double triggers and open hammers - one in 16 ga. and one in 20 ga. Both the wood to metal fit and the finish on these guns left much to be desired. I spent a little time fine tuning the fit on the 16 ga and refinished the stocks. The result was very satisfying. It has become one of my favorites in the uplands. This winter, I'll do the same to the 20 ga and you won't recognise it, either.
Due to the general perception of these brands, I'd say be careful not to pay too much because you may not be able to get it back. On the other hand, you may not want to sell it, anyway.