The 4 and 5 dice are both nearly the same size as a normal 3 dice. The fields are correspondingly smaller than usual, but this is not really disturbing. I am even of the opinion that they are better in the hand than their larger counterparts. They rotate both wonderful liquid without any hooks or clamps, silicone spray is completely unnecessary. Even for speedcuben they should comply completely to start with.
When a colleague of mine, the sticker 4ers have become slightly loose over time, with me, however, they stick like the first day.
The die has been designed so that they are not to dismantle without using a screwdriver. This at the same time has the advantage that it is impossible that items out popping the solve. There are at assembly instructions, but if you even want to see what actually is in the core of the dice.
The smaller 2x2x2 variants are more toys than real cubes. They are all turned out very small, but can still rotate well.
If you want to solve them only once, or play around with them, they range all. If you want to delve deeper into the 2s, and wants to achieve good times, you will not get to the separate purchase of a clever cubes help.
All in all you have as I said for not even 40 two high cube (3 and 4), and additionally 4 dice for the collection. So if you enjoy such puzzles, you should definitely strike.