Intelliflo probably has the most field time and they seem to be pretty good so far with only handful of failures. But I would only consider either the 11017 or 11018. The VF is too expensive and doesn't give you much more. The 11013 is an old pump without a timer but costs about the same as the 11018.

The only other pump I would consider besides the Intelliflo, is the EcoStar but that is mainly because they have a little better efficiency than the Intelliflo. But the downside is again, not a lot of field experience to determine long term reliability.

Do you have a controller that is compatible with any of them? That could be one deciding factor.