The Hawkeye is actually larger, too. Just by a couple inches, but still.
The Hawkeye is acryllic, but I have 2 acryllic tanks, and if you care for them they're just as clear as glass. The problem is that it can scratch, but if you're not throwing it around, dropping it, scarping it, etc it's just perfect. Not to mention it already comes with a 5,000k fluorescent light! You won't have to buy a new bulb.
A 6,500k 10 watt bulb is $10... So you're just racking up more costs with the kit you want.
In my opinion, the Hawkeye is better. I wouldn't want to ay $15 more (bulb included) just for glass!