I can only speak from my own experience but I would never write off AW - I have, with a couple of exceptions (who were not bad blokes per se, just incompatible) met some wonderful men from there, been on some great trips and not only that have gained my most favourite regular (as well as a good number of others) from it. The feedback system is a great help - you can look and see if a potential client has feedbacks from other ladies (who in turn have plenty of proper feedbacks themselves and so on) when he contacts you and some of them (not many!) even fill in their profiles so you can get a bit more of a idea about them and their likes/dislikes before you meet them.
The site takes a fair bit of stick and it can be a bit like amateur night, but you don't have to take bookings from everyone who contacts you, it's like anywhere else - when you get messages, decide whether or not you would like to see the guy or just bin them. I do this with all the 'txt spk' ones, anyone who repeatedly addresses me as 'babe', and also all the ones who have cock pics on their profiles (although being a bit of an uppity cow, I generally reply to them first to explain in no uncertain terms why). I wouldn't be without it, personally - the feedback system can work well for you too especially when you're new.
It is worth pointing out that AW makes it easy for men to spot new advertisers - you can set up an alert for when a new profile comes up within your chosen geographical area. Make it clear to anyone who contacts you that while you are new to AW, you are not new to escorting (even if you are!) as unfortunately there are people who will try to take advantage if they think you're a bit green.
I am on PunterNet, Punterlink and also Capt 69 - I get the majority of my site traffic from the first two but to the best of my knowledge have never had a booking from C69. Don't know whether this is unusual or not! Seriously, I would give AW a try - ignore all the bareback-cum-slut ads and just write your profile how you would like it. You can link it to your website which always appeals to AW users as they can see you are genuine and not just a picture-seller. Good luck with your booking! (and always find out where the lifts are first - if it's a late job, make sure you also find out if they lock the outer doors at a given time or be prepared to brazen it out with the concierge!)