I'm re-reading the Incarnations of Immortality septology by Piers Anthony. I read them originally as they came out, and I remembered having enjoyed them quite a lot. Upon a re-read, they're not as good as I remembered though certainly not bad. They're also quite a bit more dated than I recalled, but I suppose they weren't at the time of their release. Also IoI is one of Anthony's series with the least amount of his weirdness in it, but it's definitely there.

I also learned that he released the eighth novel in the series in 2007, but reviews are not encouraging so I'll be skipping that one.