Replacing Garmin GPS - which model to go for?

Hi
I had a Garmin 800 last year but due to medical advice sold all my gear and gave up riding, now have the go ahead to ride again following surgery.
Unsure of whether to go for another 800 or upgrade to the 810 but doubtful if the upgrade is worth the cost, my other option is to go for a 500/510.
I enjoy planning routes to ride before setting off from home and am unsure if the 500/510 will be good enough with the breadcrumb trail - having said that I do always carry my smartphone so could access maps on the phone.
Would appreciate any advice/comments as have spent all day looking online and with having to replace all my kit and being indecisive it could take a very long time!
Thanks
Sarah
I had a Garmin 800 last year but due to medical advice sold all my gear and gave up riding, now have the go ahead to ride again following surgery.
Unsure of whether to go for another 800 or upgrade to the 810 but doubtful if the upgrade is worth the cost, my other option is to go for a 500/510.
I enjoy planning routes to ride before setting off from home and am unsure if the 500/510 will be good enough with the breadcrumb trail - having said that I do always carry my smartphone so could access maps on the phone.
Would appreciate any advice/comments as have spent all day looking online and with having to replace all my kit and being indecisive it could take a very long time!
Thanks
Sarah
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Was more chuffed to find out I could cycle again than worried that I had sold all my kit! Gives me an excuse for new purchases
Good luck either way.