TWP 100 series I have found nothing better in 10 years of use. My test out back of the shop with twp water base out 9 mo or so on ipe is promising as well. J.
I like Messimer's but is there a type that is actually called IPE Oil?
I tried out a new stain/sealer this year called "Wood Protect". They claim it will keep ipe from turning gray for 2-3 years or more with a clear finish. It's been nearly 6 months now since I did a sample block of ipe, not looking good. The sample is starting to turn gray. The coffee colored wood protect may do better, but a thumbs down on the clear.