Looking for spindles

Question 2:

I am building my 1st CNC mill (I already have a converted
Sherline)... I am looking for spindles. I want something larger
than the MAXNC, Taig, or Sherline - or better said; something that
can use eith R-8, MT 2/3, or anything different.

I've searched a number of web sites and have not seen a good
diversity of spindles out there. So if anyone knows of companies, or
places that sell spindles (plus the head),
I'd appreciate it.

Looking for: spindle with or without motor or even air driven. The
table for this one is 10X10 inches. So I have a little room for
something beefier than Sherline.