Out of all Amigas that I have in my collection, there is only ONE that is on my desk full time: Amiga 1200 by Amiga Technologies.
Comes with Blizzard IV 50 MHz, 64MB RAM and internal CDROM.
In my opinion it's the best. It's compact, has AGA, PCMCIA slot, internal IDE, color composite out.
Most, if not all, games work on it using WHDLoad with proper configuration.
I would focus all my energy in finding one for a good price, and for best results get an accelerator with plenty of RAM.
The most used feature in A1200 is the PCMCIA slot. With the PCMCIA to CF card transferring files from PC to Amiga can not be easier.
Lan and Wifi is available too with PCMCIA cards, what more you can ask for?
If I had to downsize, save or rescue from fire, the A1200 is the one I'm keeping.
My $0.02 seriously.