Hi Mark,
I have owned a new Trace stack 4x10h+1x15 compact and an old stack 4x10h with red stripe and carpet + 4x10 in tolex no red stripe. The tones I got from both stacks were great and saw many gigs and each time held up to all of them and were happy being lugged around in and out of cars/vans. The only reason why I got the new style cabs(although I don't have them anymore) is because the older cabs were really heavy, but the newer 4x10 is still a bit of a beast but about 6kg lighter I believe than the older ones. The 1x15 compact was pretty light. I can't comment on the horns as I always turned them off/had them on lowest I could.
I don't think I have a preference over either but my new style cabs sold really cheaply on ebay, so it's worth having a look on there as there is always Trace stuff on there or the for sale section here.
Hope that helps!