it`s hard to say hostcharge are launching a new system in sept which is supposed to be far superior to the one they have now.
At the moment you can`t customise the secure order page but it does have your logo on the form and does not mention hostcharge or have any banner ads etc
if you want to see it in action go here https://secure.ccpay.cc/wcc/order.php?n=139
you should go to their forums for any info you need and talk to asher
I use them and i am pretty happy with them ,they had a few problems at the start but everything has been fine since.Plus asher is very helpful.