Hi Bachus,

That's a good question you ask as there are many things that can be compared between the two but I think the first question could be what would the person be using the instrument for can help with the choice.

I've owned a T3, and I still have the s950. Both are excellent in their own way.

The most obvious difference will be the build quality and the T3 being a top line model will have the better build and key feel. That said, the s950 benefits from having a light quick key feel plus built in amplification which is quite powerful.

Styles and sounds are very similar in both with the exception of the 25 audio styles in the s950 which I think are pretty useful but not necessarily essential. The s950 has some styles from the T4 as well that's not found in the T3 but these can be played in the T3 for the most part. T3 has 500 styles and s950 has 450? Not sure on that though but it's something like that.

T3 has a number of SA2 voices which the s950 I don't think has any SA2, but the s950 has guitar voices from the T4 not found in the T3.

MP3 playback is easier on the s950 whereas on the T3 it's a convoluted and slow process as you'd have to convert to the correct .wav format to play them.

There's no hard drive in the s950, T3 has an 80gb HD.

There are many more comparisons but at a push for me I would choose the T3 as although it's older than the s950 it's still a top line model and has the edge over its build, key feel, Sa2 sounds, display and so on.

Hope that helps a little.

All the best,
Danny