No, Quattro - just like to do my own trials of services, and use features where they are offered cheaply, or for free.
For example, when clients e-mail me, a copy of their mail goes off to one of my Orange mobile mail addresses and I get an SMS alert, so if I'm not near one of my (several) PCs, I can at least be aware that there might be a chance of new work, or a problem needing to be sorted out...
Asda PAYG is the cheapest, Virgin Mobile has free voicemail, so incoming calls on VM, outgoing on Asda, Three for my internet link (but never for text or voice, don't yet have a mobile to speak into o Three, though they do offer Skype, so am considering it!)
I would never depend on an ISP mail address, because I've tried quite a number of ISPs since first getting ADSL in 2000, and know the 'addressbook' problems that others have sometimes prevents them from considering a change of ISP because that "free" mail address is actually a millstone. I had an ISP mail address once (before the web-based services were running) but after 8 years that ISP (near Boston, USA) was bought up by a major cable network from Chicago, and they wiped out that mail address).
I use several GMail accounts because I manage around 100 domains (for clients) and it helps me keep track of billing and other matters by splitting things up a bit.
As for spam, I'd love the governments of the world to have a joint crackdown on it - 85% of all e-mail is spam, and every mail server would be working so much faster without that junk filling the pipes.