So, to answer my own question - No I do not think I have

New Mac mini arrived one day early i7, 16gb ram, 1tb Fusion drive.
Installed Parallels 10 without issue, immediately received an update notification which also installed without problems.
I have been using my old laptop for 4 years+ so I decided that instead of copying the whole thing (including all the accumulated garbage) I would take a bit of time and install just what I needed.
Step 1. Install an unused Win7 64 VM from disc.
Step 2. Either copy from laptop or download applications (approx 25) that I needed, apply licenses etc.
In all took best part of a day but pleased to say no real issues - I did run out of disk space for the VM, Parallels it seems thinks that 64 gb will be enough, but once I had found the correct screen I was able to increase this to a more usable size.
During installation of Windows I had selected the 'developer' option (its what I do) and for this I noticed that Parallels had allocated 12 of the available Mb of RAM - again easily changed but seemed a bit steep as a default selection.
Now I am not what you might class as a power user and will only be using the Mac for email, web and Office tasks but having used the machine for 2 days now I have to say that the performance of both Yosemite and Windows has been excellent.
Booting the Mac takes no time at all and Windows starts quicker now that it ever did on my laptop.
Everything that I need to share between Windows and OSX (VPN's, Mapping, mail etc) is working well - what I have not managed so far is to get the VM to automatically see the HASP dongles I use (software licensing) unless I unplug and re-insert them.
No doubt there will be an option somewhere but being a first time Mac/Parallels/VM user I am finding the array of setting/menus and options available a bit daunting.
Also, based on the adage 'why just spend a lot when you can easily spend a bit more' I also purchased an Airport Time Capsule - I was a bit sceptical when I read that if this as used as your network connection an improvement would be seen in download times but it does seem to me in fact there is.
What I could not do was justify spending the thick end of £900 on the Apple Thunderbolt monitor instead I opted for an LG 34UM65-P wide screen - very pleased with this as it come with software to allows the display to be split into up to 4 segments - with a resolution of 2560 x 1080 and 'MacLook' enabled it certainly does the job.
So far so good but I must say that what I have now seems to be all that I had hoped it would be, my thanks to those that responded with wise words and encouragement.
