Biggest dissapointment was a EAA 10mm compact...it was a BIG POS, with no relief in sight from the importer...told me it would only handle .40 S&W loads. I asked them why make a 10mm that will only handle the (short) & weak disspaointment that took it's place, and they had no answer. Never got them to take care of their POS, took a bath on it, and will never buy any firearm, of any kind, from them, ever. The fit was, in addition to the total lack of function with factory ammo that produced more energy than a .40 S&W. The finish was good, but of little consequence as a result of the lack of functionality.
Best, as of late, come down to two. My recent fave is a Kimber Target II in 10mm, in stiff competition with a Custom Eclipse II in .45 from the same MFG. These pistols, although not inexpensive, are an exquisite deal. I dare you to present a better value for under $1000 for either of them.
Most dissapointed, may seem funny since you don't expect much in the way of fit, finish, and quality from Ruger, but here goes. I bought a new Super Blackhawk Hunter in .41 Mag. The accuracy is superb, so I guess I should stop kavetching, but the fit and especially the FINISH of the revolver is less than what I'd expect from a 6th grade shop class. Tool marks all over the revolver, big time. Barrel was rough, but I fire lap most of them anyway, so it's moot point. The most dissapointed I've ever been with a new purchase was my levergun to go with the above revolver. While the Ruger is accurate but rough, the Marlin 1894FG is a total piece of crap. It shoots like crap, it looks like crap, and it is a piece of crap. Marlin will do nothing to remedy the situation either. I ordered this rifle special from my dealer, and didn't want to be a heel and leave it with them, or it would have never come home with me. Then I brought it home and brushed a slurry of RUST out of the barrel of my NEW rifle. I took it to tthe range and observed that I could outshoot it at 50 yards, scoped, with a 4 5/8" BH with any load on hand. Offhand, factory open sights on the revolver. The wood to metal fit was a disgrace also, no matter the price. It is a shame to see a, once great, American rifle mfg (censored word) it's customers in this manner. As much as I like to gripe about some Ruger weapons, this Marlin is the biggest piece of crap I have ever purchased....out of roughly 50 new firearms.