I swapped from Click to Red Energy using the Energy Made Easy website ^^^.
Click were OK and had a monthly installment with quarterly bills and pay on time discounts. Only reason I swapped was that their 1/4 bills were really hard to fathom with installments amounts not actually being the paid amounts. Wasn't a huge issue for me, but then I'd send my power bills into my employer for re-reimbursement and they couldn't work them out, so I changed billers and will hopefully save some $$.
They are sneaky bastards though, have a good look at what the supply charges are. Some will give you a cracking kW price and good feed in tariff, but they jack up the daily supply charges and erode any potential saving you may be getting.
On an average day the FIT our 3kW system was barely covering our daily supply charges.