It's nice and simple for my purpose. It's more expensive than the older 305, but smaller and can be used as an everyday normal watch.

I played with HR monitor for a while but gave it up. Too much hassle for little gain (for me). But any decent sports watch, including the 110, has HR display/record functionality.

Here is a review for 110. Follow the right side links on the page and you can find tons of in-depth reviews and comparisons this guy did on his "spare" time:
http://www.dcrainmaker.com/2010/07/garmin-forerunner-110-in-depth-product.html