I just remembered i use globill's on one of my websites as a payment option and I dont think ive seen that option used once in the entire time the website has been up.. everyone picks credit card,check or paypal..
dunno much about dialers just know what works for me. Money tree is by far the best Ive found yet only been using them for about a week now and they have been converting quite well on my AVS feeder sites I placed them on.. they also have frontends for every niche possible so you can choose what best suits your site..
Money Tree
http://wm.mtree.com/webmasters/ref/?322628