Has anyone been able to compare the PSR 3000 with the Roland VA7 or EXR-7? The only one I've been able to play at the stores is the PSR-3000. I was interested specifically on the comparison of the quality of the piano, strings, brass, guitar sounds as well as the style sounds, as I frequently use the auto accompaniment feature as a worship leader at my church, when the other band members can't make it. I currently use a PSR 740 and I'm in the market to purchase an arranger and I'm leaning towards the PSR 3000, but that's only because the stores don't carry much selection of higher end arrangers. Any thoughts/suggestions?