Pitney Bowes Sendpro - anyone using it?

Hi

Anyone had any experience with Pitney Bowes Sendpro system, i have being using a Pitney Bowes Franking Machine with no problems for years, looking at the Sendpro system which seem to work very much like Royal Mails OBA system. As Ebay and Amazon seem to be pushing seller to use a trackable system wondered if anyone is using it and if it is any good, as it uses the Mailmark system which is supposed to be trackable now (for parcel anyway)

Thanks in advance

Simon