from personal experience...go with the Kentmere.
I've used both, and Kentmere is by far the most reliable and consistent in processing.
I mostly use Arista chems, which are similar to Kodak's and have not had any issues with them.
I think Fomapan is just okay film. Go with the Kentmere, it is an A+ where the Fomapan gets an A- in my book.
**To quantify my grading levels...I give Ilford HP5 an A+++, and something like Fuji Acros 100 an A++