If you have no particular objection to Shimano and rear drag, I can heartily recommend the new Stradic Ci4+ RA, especially at this price. The 4000 is probably bigger than you'd like ideally, but it's only 12oz. The spool is 58mm. It comes with two metal spools and reducers that give you a genuinely shallow match spool. I only bought one because I got a deal and I'm glad I took the punt. The gearing has a certain feel that makes it more like the Shimanos of old. It's a single handle too, just in case you have a bad case of Skippy.
The thing is,I have two Shimano old aero match 3 in perfect operating order which have great spools,for diameter and depth,they are rear drag and Japanese,so have loaded a spool for my slider fishing(4-5lbs bs),the crags on these reels are of comparable quality to front drag reels.
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When it comes to drag comparisons, I guess it depends on exactly what you've experienced. I've yet to find a rear drag reel that is the equal of the best front drags I've used. I don't think that's particularly surprising when it largely depends on washer surface area. There's a lot more space for bigger washers in a front drag.
Better in what way?
Smoother in operation and can be waterproofed so that it remains the case in the longer term. I find that you can get similar levels of smoothness out of a rear drag reel, but you have to set the drag at a lesser tension to do so. Don't get me wrong, I've nothing against rear drag reels and in some ways I still prefer them.