WHMCS & WordPress Integration

I notice there are two WHMCS / WordPress Plugins available. One from WPMUDEV and the other from Iplugins (Wordpress Bridge). Obviously they vary quite significantly in price.

However I was wondering what other members have experienced to be the better module? and why?

My website is adviceit.com.au and I want to be able to integrate our current WHMCS installation into our design.

Thanks in advance.