All about the Roland Jupiter-series

Since the subject of the Ebay Jupiter 6 with Europa Midi upgrade 
is fresh on all our minds, and I just got me a very nice Jupiter 
6(which by the way, WITHOUT the Europa performs well, has 
tons of cool features, etc.), I  thought I'd poll the Jupiter group 
about the effectiveness and features of the Europa Jupiter 6 Mod.

Is it very easy to install yourself, with a limited degree of 
Electronics/soldering skill? Is the Europa company a reliable 
company and deal responsibly with its customers? Does this 
modification make you want to use your Jupiter 6 more often in 
the studio? Any other comments would be welcome, as I am 
about 2 seconds away from buying this product. 

About my new Jupiter 6, I can only state that the sounds everyone 
speaks of are pretty accurate, but the Jupiter -8 must be one 
helluva synth for it to be the one everyone is marveling over.