I use this computer when I ride during the weekdays. I like that it does not have a touch screen, as my 830 has. Sometimes on my 830 I accidentally touch the screen and I can not get back to the original screen. What I do not like about the 530 is that when initially entering data, it is more difficult to enter and save data without a touch screen. Since my 530 was a replacement for my 820, I wish I could have transferred the data from my 820 to my 530.
I used to rely on handlebar mirrors and/or quick glances over my shoulder to check for cars behind me, but the Garmin Varia has been a savior and at least replaced the mirrors. The read out display on my Garmin head unit gives and audible warning and also provides ample alert to cars approaching from the rear. If there is any concern it is that while in group rides with teammates behind me the radar can sometimes confuse cars and bikes and filter out the warning, but perhaps I don't have the unit set correctly to accommodate for both bikes and cars behind me. I will not ride again without the Varia on my bike and should have purchased it when it first came out.
Great price for power. Unfortunately I cannot get the non power side to stop squeaking. Started day one. Iï¿½ve eliminated all other potential culprits and have tried greasing, lubing and properly torquing to the right Nm setting to no avail.