Right I've read a lot of complaints where people have bemoaned the AF system on the 5D classic. At the moment I'm shooting with a 40D and a 400D, at a recent wedding I became thoroughly annoyed with the 400D when it completely refused to focus in the relatively low light while the 40D carried on as if nothing had changed. So it's time to replace the 400D as a second body, I'd ideally like an FF body and my budget puts me in 5D classic territory.
Now is the 5D AF comparable to my 40D or will I find myself in a similar situation in lower light levels as with the 400D where I'll end up just putting it away for failing me? I read threads and can't help wondering if the 5D bashing is people who have used a 1D series and their view is tainted by that or if it is bad even against the XXD series bodies.
Making this more complicated is the price drops of the 1DsMKii which is getting nearer my price territory (I'd need to sell some stuff), but promises amazing AF and from what I can tell similar (or better) IQ than the 5D classic. Problem is at the moment I can get myself a 5D classic, 28 1.8 and 85 1.8 for the cost of the 1DsII, but will I find myself regretting it over the AF?