OWC SSD Upgrade

Hello,

I'm a fairly new user to these forums, but considering I've read a lot of threads lately, I figured I could get a pretty logical response. Currently, I have a 2010 11" MacBook Air, 64GB model running OS X 10.8.2. The 64GB HD is really becoming too small and I am really looking into purchasing a 120GB OWC SSD replacement, with the Envoy solution. I am inquiring this Mac community as to whether this is a good option or not. I've heard a lot of mixed reviews, some even saying that if this drive is ordered, it won't fit. Can some of you shed some light on some good solutions for my problem? Any advice would be much appreciated.

Thanks.

Well, I do have another source that can install the standard Samsung 128GB version for $130. However, ordering through OWC would allow me to reuse my older HD as a portable external drive, which is really ideal. Hence my question about the reliability of OWC. I'm wanting to confirm that this is the best solution before I commit to purchasing a drive from them.