I personally don't like doing purls at the needle change--it just doesn't look nice, so I switch the stitches around so I can change needles with a knit stitch--it seems easier to pull them tight enough to avoid ladders.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry