Since I don't desolder as much as to justify anything more expensive
Once you get used to a desolder gun it will be hard to go back to a hand sucker.
I used to have one of the Duratools (aka ZD915-alike) and it did the job fine. Got gummed up regularly but the clearance tool did the biz. Biggest hassle was just waiting for it to warm up, but once up to temperature it's OK.
Come to think of it, I'm not sure what happened to it - thought I'd sold it on but can't remember where. Anyway, based on that experience I splashed on a DeNon SC7000Z, a trifle at around £500 from Farnell, but merely $445 from Howards in the US. It is sufficiently good that I have a long-term Ebay search for any decent one going relatively cheap as a spare, but none has turned up. Anyway, a big advantage of this over the ZDs is it blows as well as sucks. Great for localised SMD jobs of, say, resistors and caps, but also for keeping the tip clear. You suck the solder of, or out of, whatever and then switch to blow and give it a blast to eject the stuff that would otherwise block things.
Since the DeNon has everything in the gun, it's a bit of an unwieldy bugger, although not unduly so. But preferable to an air
and power connection. Nevertheless, I can't remember the last time I used the manual sucker. Braid, sure, all the time, but for PTH the DeNon (and, albeit not quite as slick, the Duratool) is the dog's danglies.