I have 4 of these:
http://eshop.macsales.com/shop/firewire/on-the-go
They are excellent enclosures.
Yes, they seem to be. I ordered a enclosured from OWC which was never delivered (due to postal services from both Brazil and US). Firstly it came to Brazil and was hold by months by the customs. Then the customs exempted it from taxes, but for an unknown reason it was sent back to USA. I tracked the package in the USPS site and it appeared to be addressed back to OWC.
Last week, I saw that USPS tracking log was deleted and it only presented a message saying that the product was disposed as it's perishable (!!!!). I'd probably eat the enclosure. What really annoys me is that they cleared the tracking history. OWC sent me a refund for the product, but not for the shipping costs. PayPal, in the end, charged me for the refund as I was being paid as a seller. Thankfully, PayPal exempted me from taxes after a phone call.
So I don't know if OWC is the best option. A $72,00 enclosure can turn easily into a $200 enclosure with taxes (or not being delivered at all). I will make a contact to brazilian customs to figure out what really happened in the brazilian side since the enclosure was considered exempt from taxes (I paid $39,99 for it).
At the brazilian Apple Store I can get a 1TB G-Drive unit for $300,00. Seems to be the best, if not only option.
http://store.apple.com/br-hed/produ...57ec0dbcec64ca3789092b6955ed901e19534bb3987ae
----------
http://eshop.macsales.com/item/Newer Technology/MSQKIT0GB/
It's not 2.5" but cheap enough to add your own 3.5" drive. I used an earlier model with my 2009 for backups. And it makes a nice stack with the same small footprint. Since its for backing up over FW you could go with an low-power, low-heat green drive since you won't need a speedy drive on the older connection.
It's elegant. For $130,00 I can buy a 2TB Western Digital HDD (I'm not a fan of Seagate). It's like buying the G-Drive above mentioned but in a more elegant enclosure and getting twice the capacity. I think I can get this kit delivered to my home for something like $300.