My first thought when firing this pistol was how balanced it felt, it felt exactly like a pistol should - an extension of your arm. It feels light but not too light, meaning aiming is very accurate and quick.
The 'Walther CP88' logo is machined into the metal, whereas the CP99 has poor quality laser printing. The overall feel when looking and shooting this gun was 'quality'.
At 10 yards I was getting inch groupings, which is very good for a CO2 pistol. It also has adjustable power, which comes in handy depending on the ranges of the targets.
The CP88 is probably the best air pistol I've ever had the pleasure of shooting, it feels natural holding it in your hands, there are many on the second hand market for £80 - £150, and they are great fun to shoot, very hard to put down.
This fantastic piece of German engineering gets top marks from me, 10/10.