If you buy an overhead reel forget about the Penn Senators they are old technology which have star drags and reels with a level drag are far superior. For value for money
look at the Shimano TLD series and for a spinning reel the Shimano Baitrunner series are great. The baitrunner allows you to disengage the drag and set the reel on a minimal drag setting, like when you are at anchor
and put a bait over the side with the rod in the rodholder, this then allows the fish
to run when taking the bait then as soon as you turn the handle you immediately engage the fighting drag setting which is a heavier preset drag to hook the fish
. The Penn spinning reels are also very good quality but the Baitrunner feature on the Shimano is fantastic and once you have used it you will be convinced of its benefits over a reel that does not have this feature.
All the best & tight lines,