Yes, pros and cons. For me, software run by one man would be more concern than hardware. I had been using some neat apps by O Deus Audio. The owner died recently. People could not register the apps in their new computers. Fortunately, his nephew was helping people register online. Oddly, hardware lasts much longer than software if you think about it. I use vArranger(one man, again), too! With the USB lock, I guess I don't have to worry about registering in new PCs as long as I have the USB lock.

I have a V3 Sound Desktop arranger with just about all their sound boards such as Celtic board, Organ sounds(tons of B3, Lowery type of sounds, theater organ, and Wersi), Oberkrainer board(I like the brass which can be used for different types of music not just Oberkrainer). V3 Sound is a one man operation and just because it's one man operation, there are benefits you get that big companies can't give you.

I am just glad that Ketron makes desktop arranger modules with the latest sounds and technology and for me Ketron seems to have the most natural, vibrant sounds. Recently, I read a post; someone using a Korg Microkey 61 to drive the SD40. That would be the ultimate portable setup. Indeed, I tried it with my SD40 as I have a USB version and the Bluetooth version of the Microkey 61. I love the fact that I can use my 88 keys or any other midi controller such as my MIDI accordions with the SD40. In the end, all the benefits and pros outweigh the cons for me.