@irishmike,
If you're not in a hurry due to money being tight and don't mind piecing it together little by little, here's a few thoughts to consider. The 3000 is a very decent Amiga, and it has the slim case design. You could stack two 3000's on top of each other and use a small 2 or 4 port KVM switch to use a single keyboard/mouse/monitor with the two Amigas. This is kind of what I did with my gear. I bought a sturdy metal closet storage rack thingy at Lowes and put it in the closet. I put the PCs and Amigas on each shelf and connected them to the KVM. I use one monitor, one keyboard, and one mouse to control all seven. Now everything is out of sight and nicely stacked up taking up a tiny fraction of the space it used to. Makes my wife happy and keeps her from complaining about my insane hobbies.

Just food for thought. I think if your projects are very ambitious, you might be better off with the big box Amiga.

-David