When it comes to OCZ's stable of products the Vertex 4 is the new IOPS monster. When you start searching for balanced performance for desktop use in the lower capacity sizes though, the Vertex 3 Max IOPS still appears to be a better choice.
With high sequential performance, high IOPS that reach peak levels at lower queue depths when compared to most other SandForce based drives and real premium flash, this 120GB drive offers good performance in all categories.
The Vertex 3 Max IOPS is an aging drive, it's actually one of the first SF-2281 drives offered, but its performance is timeless. Still, two very big obstacles are in the way of you buying one. The first is the baseline Vertex 3 which costs quite a bit less and for most desktop users provides nearly the same sequential performance. The second obstacle is Vertex 4 with even more IOPS performance and an even lower price than both Vertex 3 and Max IOPS. Still though, the best mix between sequential and IOPS is the V3 Max IOPS, it's just too bad you have to pay so much more for it.
At the time of writing the Vertex 3 Max IOPS 120GB was online for roughly $180 shipped in the US. If you're looking to build a high performance RAID array with smaller drives or want higher performance than what your buddies have with their baseline drives, the Max IOPS is still a good choice.