I dont know about cancuntransfer.com I couldnt find a price on their page. I am going next month and I am going to use entertainmentplus they are charging $55 round trip for 3 people. I thought this was a good price seeing that if I booked shared transporation from Expedia.com for 3 it was $57 and entertainment plus is suppose to be private transfer. I have emailed them several times and always had a response from them within an hour to answer any questions I have had. Also, you dont pay them until you get there 70% when they pick you up and the rest on your back to the airport. That is for Cancun only...their website said that if you are going to playa or riveria maya they want 100% up front. With Loomas Travel I checked into that they wanted $63 roundtrip and to pay with my credit card over the internet. I didnt feel comfortable doing that in another country, just because I have never used them and didnt want to possibly get there and no one be there to take me to the hotel..I heard many good things about entertainment plus.

We always used the shared van ...9.00 a person...we were always the last stop but enjoyed the tour of Cancun and the other hotels....

I am assuming you mean $9 per person one way right? Well with me since I have 3 people that would be $54 round trip, with the private shuttle I am just paying $55 total so I guess it seems worth it for just a $1 more, faster to get to hotel and check in and faster to start enjoying Cancun.