I have put many miles on my 5 Abu Garcia reels. Two are the 6500 C3's. Matched with the proper rod they cast a mile. Yes they will backlash but that is mostly because of improper antibacklash settings.
If you buy it here's some tips on adjusting the antibacklash nut.
To adjust the antibacklash tighten the antibacklash nut down so your weight drops slowly from a horizontal position with the spool released. Once you get the hang of it you can take tension off of the spool to cast farther but this is the starting point. Even if just changing to a different lure or weight.
Remember this, less tension on antibacklash nut - bigger birds nest (backlash)!!!
Casting into the wind causes the most backlashes for me. You need to use a tighter antibacklash setting when casting into the wind.