FOREX signals service that works very well for me, but..?

hey.. james here.. ive been trading now primarily in forex for about 3 1/2 years.. and for the past 6 months ive been using a signals service that has worked incredibly well for me, especially when compared to 2 other bogus services ive tried.. i've made a pretty significant amount of money with it..it's spot on accurate probably about 90% of the time... so I trust the integrity of these people.. but my question is, im thinking about upgrading my membership to the diamond edition, which enables me to use a new autotrade service they are now offering, which basically supposedly takes all these accurate signals and trades them for me all automatically, like a robot.. this carries a monthly membership fee of of just under 100 dollars... the only reason i havent done it yet is because i know there are similar things out there, these trading robots and what-not, like fapturbo for example that i know are total scams... these guys have had an excellent track record with me so far... but im a bit weary when it comes to this auto-trade thing. Their website is http://www.forex.pcti-system.com .. Has anyone ever tried this particular service with them? any advice comments or suggestions would be appreciated.. thanks