Does anyone tow using dedicated electrics?

[.Jas.]

I'm looking at getting a tow bar fitted, but am unsure if I need dedicated electrics or not. I know they cost more, and provide a link with the cars ECU, but for what benefit?

I have a 2007 A4 3.0 tdi, I don't have reverse parking sensors nor cruise control. These sometimes get mentioned in the dedicated electrics benefits. Is it worth the extra hundred quid?

 

[adcooper]

I had the oem set fitted a few weeks ago, It all works very well but not sure if it changes any settings other than turning the pdc off. I got it in case as the caravan has idc so thought it would be best.