I would like to address this issue:
The issues I have with it are first the time facter, second what the heck do you then DO with all these models? It must consume an insane amount of space after a bit.
These models are intended for showing (whether it's a F22 you built or a Macross) and not intended for playing with. They can break if you move them far too much. If you want to move it a lot, get an action figure although if you do play with an action figure while making noises I would wonder about your age.
After you are done building the model, it literally doesn't take much space, it takes as much as two or even three inch at most on your desk. They look cool while you work at your PC or just play games and have your friends over.
I am currently building a perfect grade Gundam that takes up about ten inches but that's because it has other parts that are meant for display.
This is the model I'm working on:
http://www.gundams.net/files/pictures/wall/destiny/eternal_skygrapser1.jpg
A Skygrasper.
http://www.hlj.com/product/BAN934101
For those wondering about the grades:
http://en.wikipedia.org/wiki/Gunpla
Perfect Grade
1:60 kits, PG (Perfect Grade) kits are unmatched in sheer quality. First released in late 1998, these are made of even higher quality plastic and metal components than the MG kits. These kits include parts that have to be secured with screws, and often require some minor wiring for small LEDs. The market for the Perfect Grade models is limited due to their high cost, often topping $150. Highly-complex design makes PG models a true challenge and their construction can take a few days.
Perfect grade sample:
http://www.dannychoo.com/slide/eng/...ai+Perfect+Grade+1:60+GAT-X105+Strike+Gundam/
Just an advice though, don't buy a perfect grade until you have messed with a few lower grade ones or cheaper ones. The reason is because some parts plastic and can break easily.
If you get the true Japanese import ones, most pieces are metallic and quality is assured but you won't be able to get parts replacement because you have to live in Japan for that. So like I said, get the cheaper ones or lower grade ones.