generally speaking, electronic are better because it's usually minimises spiking and you get the ease of adjusting the boost in cabin. You also get other little extras (depending on the EBC) like overtake boost (or scramble mode), boost readings etc. When setup right, they are great and worth the money in my opinion, however you do get the odd people that either dont set it up right or just have trouble without explanations and go to the cheaper bleed valve and have 100% success. But if the budget stretches, i reckon it's worth it, since a second hand EBC can be picked up between $300 - $400 (again depending on brand).