Well, right now mine are small and they are in my greenhouse. I *think* they are Myer, from Spring Hill Nurseries. I thought it might be a good way to stay stocked up with lemons!
As to aphids, they are easily killed with apple cider vinegar/soap/water sprayed on them. Actually, there are many recipes to spray on the aphids to kill them and doesn't hurt the plant at all. Does Curezone have a gardening forum? Hrm. I'll have to check that out.