A65 vs. A77 vs. A99

Here's maybe a crazy question...ALL things considered (cost, quality, etc) which would you recommend, the A99, A77, or A65 (or other)?

I currently own the A100.  It is almost 6 years old.  I'm ready for an upgrade.

My current equipment is...Minolta AF 50/1.8, Tamron 70-300/4-5.6 Di (which I do not think works with a full-frame sensor),  and Sigma 24-60/2.8 EX DG D (which, again, I do not think works with a full-frame sensor).  My flash is a Minolta 3600 HS.

I like the "idea" of the full-frame sensor because of lower pixel density/noise/etc., but this may not be the best option for me considering my equipment.  I do not like noise, and my A100 has noise in low light at ISO 400 and above.

Of course, cost is always a major consideration.  I just wanted to poll the group and get your thoughts.

Thanks in advance for your advice.