Saw your PM and before I amswer that, I need to add one more bit.
As much I love my SanDevices controllers, before you take the plunge, have you asked the same question over at doityourselfchristmas.com? I only ask because fasteddy is right, most of us are giving you our opinion based on our experience and a lot of us have only used one brand. But like the purchasing of a car, you can ask someone all day long "do you like your car you just bought?" in the end they have no other new cars to compare it to, and a 10 minute test drive doesn't help much. All you have is their opinion. Then you have to wonder if the person giving you the opinion has an agena in any way. The internet has changed personal interactions in so many ways. If you ask a simple question "where should I purchase some LEDs?" You get those that will say google.com.....other will say "check out my website" but rarely is it done like 20 years ago. "I use Joe Blow, he has decent prices and stands by his product, he is a good guy, there could be others, but am happy with Joe" So in the end you make an informed decision based on the experiences of others and the level of respect/trust you have for that person. Bobby wants to go with SanDevices because a guy that lives near him uses them! That is much more tangible that any of us in the forum. All of us here are pretty much random aquaintences.
That being said, yes, I went with Jim and his SanDevices, why? Here are the reasons:
1. He didn't make me feel like an idiot, even though that is what I am. Answered every lame question.
2. I liked the idea of having 16 connections (conversely, for certain applications I like the ECG-P2 with only 2 pixels strings and look forward to using them somewhere) I chose my pixels first and since they were 5V, I did not want to mess with injecting power down the line, so the more connections, the better.
3. I liked that DMX universes could be split across connections
4. 2 people that I respected very much Donny Carter and Mark Schell (and helped with my CCPixel debacle over at LSP) said they had no problems with them and would use them again.
5. At the time LSP was having trouble transferring Matrix setups from sequence to sequence (if they were existing sequences) so I needed a setup that was fast and easy to duplicate. All first pixels starting at one end going up was easy to duplicate, not even I could mess it up.
I have been a member since 2007, but, I never asked the question over at doityourselfchristmas.com. Why? Well, I was never planning on getting into the DIY RGB Pixels, all of you were nuts! I barely had enough time to do my display. I didn't want to mess with soldering and group buys and all that jazz. So i jumped in to the plug and play CCPixels and LOR forced me to find an alternative when, as a LOR employee said "maybe they will just never meet your standards." I stopped my correspondence after that statement back in July and I was strapped for time. But, with the help of Donny and Mark, I found something that worked as I envisioned, and cheaper.
My setup was easy, rectangular panels with 2" spacing. I am having trouble 100% visualizing what you wish to do and do not want to steer you in the wrong direction.
So, really, start a thread over at doityourselfchristmas.com and get some more opinions, you do have time. Download the manuals and read them and see what interface you think you might like better. I don't mind user commands, but I had to have a copy of the manual handy.
Then again, $189 for an assembled SanDevices board, hard to go wrong.
Besides, whatever you decide on, I am sure you won't stop at just one!