my collection is fine. it's just a little dated (i haven't bought a new car in 13 years) and mostly non working. and the main cars i run my local hobby shop's don't keep parts in stock for. everything is a special order. so it's very inconvenient when they wear out or break.
im happy with what iv got, im just not happy with the support it has. id upgrade and get a new car or two but the market sucks for the performance minded kit builders on a budget, so im kinda screwed.