There will always be an ideal program for each trader, the one they're happeist with. Sharescope is aimed fairly squarely at the Investors' Chronicle/Zulu type, it's somewhat cheaper than Company Refs (although, for the out and out Funnymental trader, I can't help but figure Refs is probably the way to go), and its charting has in all fairness improved a good deal over the years.
It's a fundamental trader's delight, with more than adequate charting, and hardly bank breaking for a monthly sub. Many of us on here are TA types, and would probably (sorry SGM) no more subscribe to Sharescope to cover RT trading than we'd buy a Nissan Micra for the refined high speed cruising...
Having handed out extra licenses for software at no charge myself I think it's fair to allow a user to run on two PCs at once - many traders have a desktop and a laptop, it is far from unusual to want to run two installs at once. However - that's for a program with no datafeed. Should exchanges count downloads etc and pass that on to companies, then you can't expect them to absorb the cost when you want extra copies - it is perhaps more realistic to have an 'extra copies' fee that is set at a 'cost covering' level - so say £15 or whatever for Sharescope (first install) then £8, £10, whatever per month for additional licenses to cover data fees for the extra installs.
If you can't afford an extra tenner for the second PC, then you are either very tight fisted or running a great deal more hardware/IT than your investments warrant.
Dave