I am a collector too but different from some of you guys I actually enjoy having different garages around the state. I also enjoy having 6-car garages for the sake of variation. I would have one 2-car as well but I am very close to filling up all my spaces. I am also not interested in trading my 6-car with 10-car garages because I have plenty of those already. Also there is no 10-car garage outside of the city, which sucks.
The main problem I have is organizing. As in, where will each type of car go.
I used to have everything nicely sorted. I have a 10-car garage full of Grottis, another 10-car with some Classics and their respective modern counterparts. Those 2 are almost never rearranged. The CEO garages are holding my remaining sports classics and muscles (1) and sports and supers (2). But due to the growth I've purchased the 3rd CEO garage which is now a Muscle/American garage. Due to lack of space it also houses my Ken Block's cars (at least they're both american) and my Armored Kuruma. The 1st garage also holds some unrelated cars as well for the same reason. Only spot I have left on those is for the Dom GTX, next to the other Dominators and Ellie. The Michelli will have to wait lol.
One of my 6-car garages is an Off-Road garage in the desert; another one was a Dubsta garage on Poplar street, where I kept my Dubsta 2 and the 6x6, and where I kept a collection of Golden and Chrome Dubstas. Due to the lack of space, that is now a Benefactor garage. But the Stirling is annoyingly sitting on my Sports Classics garage because space.
I also have a last 10-car garage which holds common cars, like the Intruder, the Blista, the Issi Classic, and so on.
And another one where I keep some lowriders and a little gang-car collection, in homage to my PS3 days. The very same garage I used to store them on PS3 (also on Poplar street). That one used to be 100% gang cars (there are several different cars to find, I tried to have one of each, but this was my primary money income back in the day) but obviously it isnt anymore.
(Sorry I digressed.)
Now about moving the cars around, I also believe that the best way is by using the CEO assistant to bypass the cooldown.