If you need a second rail, it may be cheaper to get it in a kit now. It is years since I have looked at what is in each kit, but it certainly used to work out cheaper that way.
I haven't used the Makita, only the festool. There are various discussions and comparisons around between all models. Some say that the festool is slightly underpowered. I haven't had an issue with this, but you really want somebody that uses the saw every day (or at least extensively) to give an opinion on that because that is when shortcomings and frustrations are flushed out, not from the likes of me who uses it some weekends for a few cuts. If my ts55 were to break beyond repair I would probably get the same again. I may consider the Martell or the cordless festool but I think that they would quickly be ruled out on budget.