I have the baby brother, the Lelya 2, in .22 cal.
It was also my...first PCP gun.
It's been a great purchase. Basically, zero maintenance, one of the most, If not...the...toughest, VERY durable guns on the market, the way that it's designed. There's NO barrel stick out to get bent or damaged !!! Others may claim this, but in reality, the Lelya and the bigger brother, the M5R/Matador, is very much the same gun.
Shoulders well, very nice trigger, accurate, has had NO air leaks (in over 2 years). I've had NO...magazine problems as noted above. I've added the longer BAT suppressor to make it a little quieter, and put a modified R5M (Matador) stock on it, just for the hell of it.
After sitting a coupla months, I pulled it out last week and put a few magazines through it. Didn't even have to "top it off" from the previous pressure fill, months ago.
Parts are available, o-rings are available. Though if you like to put add-on goodies on your guns, there really isn't much aftermarket stuff out there. Other than modifying the stock (paint, vinyl wrap, hydro-dip, or maybe a custom stock), and changing the sighting system every now and again as I seem to do, that's about it.
Only had to change the battery in the pressure gauge one time in the 2+ years of owning the gun.
Mac - As long as you know the guns history that you are thinking of buying, I would NOT hesitate in buying it.
Here's mine. It's still got the stock suppressor on it here. And the "marble" vinyl wrap will be coming off of the Matador stock, and another being put on as soon as it gets here.
Mike