Upgrade to my old Recon 1 Mini

I've carried this Recon 1 mini for more than 10 years and it's been a helluva trooper. This knife has been abused in more ways than I can count – used as an ice pick/chisel for fishing, splitting wood, was my main can opener for 1-2 years. One time, we even used it to cut one of those highway construction barrels in half. Mostly though, it's been the reliable knife I carry for regular knife tasks, opening boxes, cutting food, whittling, cutting rope, etc. Throughout all of it, I've never had a single issue, never had a failure, never had to worry about taking it apart and cleaning it. The only maintenance I've done on the knife is regular sharpening whenever the edge gets dull.

When I got this knife it was a gift (I actually gave him a Recon 1 the same year, unplanned) and at the time neither of us had a whole lot of money to throw around. Based on the age and the money I remember spending on the knife I gifted, best I can figure is that this is one of the Aus8a recons. These days, I've got a bit more money to spend and would love to get a knife as an upgrade to my good ole recon.

I have a few other knives I've gotten over the years, and I like them all well enough but I find myself carrying the recon nearly every time I reach for a knife. The next closest in the running is my Kizer Begleiter, but that's simply due to the fact that it's my "dress knife" (office worker, don't want to carry a "scary tactical" knife). I'm not as worried about that since the Kizer has me covered, but personally I don't tend to like the more tactical knives.

Really, I'm just looking for a tough, reliable knife that will hold up to the occasional "I probably shouldn't use my knife for this" abuse. For budget, we're looking at ballpark of $200, but if there's something really great I can stretch that a bit, no more than $300. I'm a lot easier on my knives now, but I really want to have that comfort in the back of my mind that if I need to do something stupid I can and not worry about it. I think I'd prefer a blade in the 3-4" range, since I'm pretty good and used to the smaller blade on this recon. I've been reading up more on steels and I'd love some advice there. I find the steel on my knife dulls a bit too fast for my liking, even when the knife is being used reasonably, so a bit more edge retention would be nice. Not concerned about stainless vs. non-stainless, no problem to oil the blade on occasion.

So far, been taking a look at Spyderco, microtech, benchmade, kershaw, and a few other brands, just seeing if anything jumps out. Those were just off the recommendations of my brother, who's been collecting knives for a long time, so definitely open to others, too. I already own a few kershaws, a Kizer, and an old sanrenmu, so I'd be interested in trying out a new brand. Would love to get some suggestions or knives to check out, or just to hear some experiences you all have with others.

tl;dr – I have an old Recon 1 mini that's been beat to hell and it's my favorite knife. Looking for a tough, reliable upgrade around $200 with better edge retention. Doesn't need to be bomb proof, but would like it to be occasionally idiot proof.