Lately I've been buying a few Cobi Sets.
I have a Sherman, Centurion, Mark 1, Elefant, and T-34/85 Rudy.
They're solidly built, occasionally you'll have a hollow built into the main structure but overall, solid. There's more attention to the outside appearance of the model than anything inside, they usually have no internal accommodation for a minifigure. Hatches are only deep enough to stand their very short legged figures up and waist high out of the hatch. The Rudy tank is a bit special because it's based on a communist era TV series called "Four Tank-Men and a Dog" so it has four tank-men minifigures, and a dog. So the front of the tank can hinge upwards and a single driver can be placed inside, there's only one working hatch on mine so one minifigure can be placed standing up in the cupola. the two other figures and dog simply have to stand next to it. Engine detail on all the tanks is either a print on a plate or more often a simple basic molded engine plate that's used for all tanks, no mater if it's accurate or not, and a hatch or two that hinges to expose the engine compartment.
Cobi's system is interesting, they have clearly copied brick/plates from Lego or Mega Bloks, but also have their own brick/plate designs that are quite innovative. There's anti-stud on to and bottom bricks, there's positive-stud on top and bottom plates (I don't know if they came up with this or Mega Bloks) there's hinged smooth plates, plates with rivet texture on the outside, plenty of different sized barrel pieces and barrel connectors, and a cleaver tiny hollow stud piece that you use a special tool to place on the anti-stud side of plates to turn the bottom of the plate into a positive studded side, Also a larger stud piece that can be placed into the anti-stud side of a brick to do that same.
Mini-figures are terrible, but better than Cobi's Legoman knock-off. I've grown to kinda like them more than at first but I still throw them into a bag at the end of it. Some are truly creepy looking but still cute in a way. If you're wondering, yes Legomen can be placed in the tank, and the tanks are in scale for the most part, possibly a little on the small side with Mega Construx minifigures, just don't expect to place Mega figures inside or even in the cupolas, they won't fit.
The best part of Cobi sets are the tracks, there's three sizes (possibly four) with multiple types of wheels. I only have experience with the large and medium size tracks. you put them together one link at a time and as long as you are patient and take your time to get the links together properly, they work well. I've heard in youtube reviews that the medium size tracks (they're on the Sherman) have issues like stressing, breaking, or not rolling very well at all. I took my time and did stress a link or two but there's extras so in the end, mine rolls easily, no issues at all with the medium tracks. Also all tanks have printed bricks, no stickers but the World of Tanks sets do have optional stickers and the planes and ship models unfortunately have mandatory sticker detail that are placed over multiple pieces, not good.
Prices for people in the US are higher than in the UK or EU or Australia. They might be more accessible for people in Canada. So try and look for deals, I bought the Rudy T34/85 in a crushed box for a discount on Amazon and was lucky that it was undamaged and complete and also the right set I wanted. That's the other issue with Cobi sets, there are multiple versions of the same type of tank, as far as I've been able to figure, the T-34/85 has about 9 versions, a few are very similar with just different graphics on the box, prints, and minifigures but several have different builds, including one that has two working cupola hatches and a tarpaulin. When buying sets on Ebay, Amazon, or Walmart you can very easily get a different version than what is pictured or listed. I bought a Sherman on Ebay and was sent a different version than what was pictured, and ended up paying more than I wanted to. Different sets can have a specific number, but more often are differentiated by a letter suffix that's ignored in listings.
Does anyone know of a place that carries Cobi sets in the US other than Amazon and Walmart? I found a couple of websites but no Brick and mortar stores. If there is a website, does anyone have experience with them?