I have built ORP Mazur and have the Grom in the stockpile. They are very nice kits. Some details are a little overdone (portholes particularly), but the fit is very good, and parts breakdown nice and logical. They are cheap, and I think they're a perfect introduction to small scale ship models.Only real negative is the instructions are in Polish only (including the painting instructions).
If you can find a soure, Mirage Hobby produce etched sheets for each kit- they are well worth having.I was new to adding p/e to models and found it very easy to use. Not many stockists seem to carry the range and I don't understand why Mirage don't sell them together with the kits!
Indeed, overall the biggest problem I had was finding references/ photos/ colour info for ORP ships!
Will