I am still missing some of the main consoles. but in the last few months I was able to get some of those I was missing.
First of all, the Mega CD II. I really don't like Mega CD to be honest, but it still has some pretty good games. Not many, but those few are really worth the system alone. Snatcher should probably be the number 1 title for that console in my opinion.
Seccondly, the Mega Drive I. I already had a few models of Mega Drive II but I was never able to find the first console in good condition and for a good price. I finally found it, and I am very glad that I bought it!
And finally, probably the rarest and most important of them all... Something I did not even know it existed until last year and I never expected to find it so soon: a PAL version of the NES Top Loader. I am so glad that I was able to get such a console in my collection. I did not expect to find one so soon, really!