Good news. I'm thinking about getting into H O.
Been there. Done that. Ain't fun to be in that dilemma.
Some thoughts:
* If you like the heft/size of S scale, HO will take some getting used to. The stuff will look tiny at first. Your eyes and dexterity may not like HO as well as S. Here's the same type of model in S and HO:
* If you're looking for more layout in the same space, you can count on about 30% - 35% more layout in HO compared to S.
* If you enjoy detailing diesels, S is more user friendly (size), but that is tempered by the lack of details compared to what is in HO. (However... Detail Associates appears to be fading away and common Detail Associates detailing parts are getting harder to come by.)
* The best of S runs good. Almost all HO runs excellent now.
* S is far easier to place on the track and/or re-rail. However, derailments seem less frequent in S than HO. (Mass.)
* If you like creating things yourself, there is more need of that in S.
* If you're after variety, HO gets the nod.
* If you're wanting to get up and going fast, then there's an overwhelming selection of quality RTR in HO. (IF your budget can stand the pressure!)
* In some ways, for a shelf switching type layout, I think S scale lends itself to such better than HO on account of S scale's visual impact.
There are other points, but this is getting too long.
I wish you the best of luck whatever you decide.
Andre