Posted: 06/10/2014 at 10:39
As others have said DC Rainmaker will tell you more than you ever need to know to make the decision so check it out.
I have a 110 without HRM and it is perfect, robust reliable and pretty accurate. The sattelite lock takes a little time but not sure if the 10 will be much different. Based on my knowledge of the 10 I would go for whatever is easier on the wallet.
PS the charging clip is fiddly but not a major issue