As far as homemade vs Trigger, I've done both. My homemade worked great, built for around $100 with a aqueon 29 gal, I was very happy.
Upgraded to a custom built 115 gal mixed reef, and it still worked great. Then I got a Trigger Emerald 39 and it not only works great but LOOKS great. My wife loves to have the front cover off sometimes as we both find entertainment on top and below our mixed reef.
Also, Trigger cut me a custom sock holder insert (2 socks instead of three) for FREE, I just paid a few buck to ship it. Awesome service.
And so, in the end, I'm happy with my sump purchase. Some would save the money but I'm sure they'd spend it elsewhere where I might not.
Still have the old sump, you never know...