This financial year Ive been doing really well on Viva - I also advertise on AW but Ive been getting much more work from VS which is shocking!
It can get very expensive to advertise with them if you select the optional upgrades, but if they are bringing you enough paying clients then that should easily cover your outgoings. I spend on average ?30-?40/week.
Its a shame that they cant improve on their customer service side or respond in a timely manner, but I now have a specific person I speak with if/when I need to call - he speaks good English (I find that most of the office staff dont which can get very frustrating) & is very quick and efficient when dealing with my issue (and I have had quite a few issues with them but I only stick with them as they are the most lucrative site for me otherwise I wouldnt!)
Leicesterlass, every site is going to be different for us on different websites and that can vary from location, services provided etc. My best advise to you is to trial it for a month & see whether it works for you or not - at least that way you can get a true idea whether its a good site for you or not. The cheapest option is ?5.99/week but thats just for posting your ad online only