So I have been doing a lot of reading and watching videos, and would like to hear from those more experienced at this than I.

Which machine would be better to do a conversion. This would be based on things such as:
1. Build instructions / threads available
2. Availability of plans to make conversions
3. Availability of quality conversion kits
4. Additional enhancements once the base machine is converted to CNC
5. Availability to add 4th and 5th axis.

I realize there are those that would say "I did this one and I prefer it", but I am looking for a comparison in order to make an informed decision.

Maybe someone has done this type of thing already. If so, please point me to it. With all the talent on this site, I believe there is a good comparison to be had.

Thanks in advance,
Dan