Recently I learned that a couple of owners of really fine O gauge layouts are moving to HO. I appreciate that HO is half the size of O which means that you could create a layout twice as long as O in a given space. I also acknowledge that HO costs less and doesn't have a third rail. Because of those reasons I built a 4x8 HO layout when I was a kid after starting with a Lionel loop. I remember that HO was unreliable and that I had to clean the tracks often. That said I really like O. The weight, sound quality, reliability, and ease of operations of O. I self-service/PS2-3 upgrade my own engines and can't imagine performing electrical work on a HO engine. I not getting any younger and I quite frankly find it easier to see, handle and rail O gauge.
So does the desire run our ever growing collection on more track cause us to consider going HO?