The best replacement for ac1 is ac3.

The best alternatives to ac1 are rated as following:
★★★★★  ac3
★★★  ac2

Your alternative for ac1 is not listed? Suggest!
Speaking about ac1, one probably shouldn't forget about revelations.

Other search terms related to ac1 and their ratings are:
★★★★★ revelations
You have in mind a companion for ac1 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ac1 in all years. Click on graph for more.
ac1
ac3
ac2