Are you getting boost creep because your EBC isn't working well, or because your wasgetage is too small for your turbo?
Question is kind of vauge though. What do you mean by "best"? The most programmable? The most options? Most stable? Cheapest? Which options do you plan to use? Do you need a display that monitors other parameters?
There's a huge following of people that say manual controllers are the only way to go (I'm not in that following, but MBC's certainly have their place).
Personally, I opted for the TurboXS High Performance Dual Stage boost controller. You get the performance and reliability of manual boost controller with the convenience of 2 boost settings at the flip of a switch! This way you can have your normal street setting, and then switch it to high boost when the time calls! :bigthumb:
I don´t think that the AVC is your problem. A lot of guys are running it and it performs well.-Even with my stockers it´s ok.
What spring you got in your gate and what boost levels do you reach with deactivated EBC?
I would check that things first before interchanging the BC. Just my .02
i had my avc-r for many years. took a while to get it dialed in but after that is was great. love its features. also cant go wrong with the new greddy bc it only has 3 knobs low high and gain. very easy to use.