It's been my only one so far so can't compare it to anything but I really enjoyed it. I know the year before they had complaints about the finish and they changed it for last year so thing that is now all ok.
As for not being in Edinburgh you start in the city centre and finish about 6 or 7 miles outside, it is run along the costal road so after the first 10 mile it becomes more countryside going through small towns and villages and had loads of folk out cheering everyone on so I think you will enjoy it.
I will be doing the Edinburgh and Berlin Marathons this year well i hope i will as i have entered them lol. Did Edinburgh May 2012 which was my first Marathon at the age of 45, so thought id come back and give it another go this year, also few folk from the club i have joined did Berlin 2012 and gave very good reports so thought id try that.
We stayed out at next to the Finish line last year at a local campsite in our Motorhome and they run busses to the start in the morning of the race. So more than likely be doing the same this year, found that most of the campsite had runners staying there. It meant my Wife and Daughter could watch me as i passed the 10mile mark and then walked the mile to the finnish where they watched the rest of the race until i finished.