Thanks fore the quick responses and information. I have decided against the SP1. The vendor claimed it was New (probably is) , but was carrying the warranty themselves. Not something I would jump at with no msoft warranty.
The battery issue would not have mattered much as I have the Power Typecover with another 4+ hours within. When the SP2 was stolen I did not have the cover attached so I have half a complete computer.
I am looking for something reasonably priced to replace the SP2. A 64g and it's 3rd gen i5 would be more than adequate for my needs. Msoft are out of stock of SP2 64g and I cannot run to 900-bucks for a 128G.
I have an aversion to buying used, so not much of an option there unless I can get a free return and full refund if it turns out to be faulty after a few weeks. Intermittent faults being what they are, I am not a fan of "refurbished" either.