I have a Garmin Forerunner 405, which has HR although cadence and bar mounting require accessories. Large display, excellent backlight, and the GPS allows you to race a virtual partner or against your own previous efforts. Will cost at least $300 with the accessories though.
If cost is an issue, you might get everything you want buy picking up a Cateye Astrale computer for about $40, then getting a simple HR monitor with zero extra features. You can still find those on ebay.
If cost is an issue, you might get everything you want buy picking up a Cateye Astrale computer for about $40, then getting a simple HR monitor with zero extra features. You can still find those on ebay.