Here's an interesting page from a corolla owner, they use many of the same filters that the Highport sr20 uses.
http://www.corolland.com/oil-filters.html
I have used the Purolator PureOne model that he mentions (PL14476), and I liked it. The case is a bit wider and longer than the typical sr20 filter (it rubs a bit on the drain tube funnel when you install, it's a tight fit but it goes), and it seems to filter very well. I have been trying a few different filters lately, I liked the purolator better than the bosch premium (also a good filter though), I have a nissan filter on there right now. Probably going back to Purolator for the next change, especially if I see them for a dollar off at Advance Auto again.
