What do you value most in software quality?

I want to see where people want to see improvement in future software. What do you value most out of these (give your top 3):

Integration = how well the application works with other applications on the system without conflicts or extra configuration.
Simplicity = how well the user interface lays out the functions of the application without clutter.
Seamlessness = how well the user interface keeps the same design elements / methodology as other applications on the system.
Intuitiveness = how fast the user can determine the function of a user interface element.
Features = how many functions the application can perform.
Modularity = how far can you decompartmentalise or strip down a system of its packages/plugins/extensions etc.
Performance = speed and responsiveness of the user interface and background compute-intesive workloads.
Efficiency = how fast a user can perform a task with an application (less steps, less time)
Security = how well the system is protected against security vulnerabilities, malware, etc.
Stability = how susceptible the system is to crashes, hangs, or general errors.
Reliability = long term stability, no loss of data, memory leaks, performance regressions; steady state computing.
Interoperability = how well the application complies with to open standards and protocols.
Scalability = how well the application scales; allocation of memory and cpu depending on hardware specs for optimal performance.
Customization = how much the user can change the look and feel of the application/system.
Ubiquity = the ability to use the application on any platform/architecture, any time, and any where.

If you value something more than what's on this list please say what and what it means.

My list is:
1.) Performance
2.) Seamlessness
3.) Ubiquity

Quick question: What are you going to do with our input?

whs said:

Quick question: What are you going to do with our input?

I thought someone would ask this. It's just out of my genuine curiosity. I'm not using this as a survey or in a project or anything.

I'd say seamlessness, performance, and efficiency. In no particular order.

Firestrider said:

I want to see where people want to see improvement in future software. What do you value most out of these (give your top 3):

From your list... stability.

But the best features are:

Specificity ... do one job and do it well. There's nothing I hate more than software that tries to everything and gets none of it right. I don't want my music player to burn DVDs and I don't want my DVD burner to make toast in the morning.

Simplicity ... make it very easy to get the job done. Take one task, reduce it to the most basic elements and wherever possible give the user one or two buttons that get the job done. The perfect UI would have 3 buttons: Help, Do It, Exit.

Layout ... Nothing bugs me more than software that looks like it's UI was designed by a 12 year old. Work progress should naturally flow from top left to bottom right of the window, controls and UI elements should be laid out to intuitively lead the user through the necessary sequences...

Here's an example now NOT to do it...

Performance: Any software that I use has good speed and response time. If it doesn't i uninstall it.
Reliability: Software that freezes or crashes is crap software.
Simplicity: If I don't know how to navigate around the software then it has a terrible layout or i'm a complete idiot and don't know how to use it.