Connect cables from solar closer to converter than batts?

I think a few folks are using the eco-worthy. BFL13, perhaps?

I'm not sure that a cheap controller will provide the best results. For example there is one called BZ that is extremely poor at MPPT.

Thanks. I looked at both those and according to their specs neither will handle the uni solar 136 watt with it's 48 voc.

The bfl gives a max rating of 43 voc. Any idea how specific these numbers are? Do I have a little wiggle room?