Does Diggles only give one prize?

[kitsunaii]

I have the berry he wants, but I only have one and as easy as it would be to plant it, I fear I might forget to water it again and lose it entirely like I did with the Berry Seeds I got. I'm just curious as to whether the prize I already got from Diggles, the egg, was the only prize, or if it's worth losing my Enigma Berry and hoping I get another one someday.

[FireFang1331]

Diggles always gives you an egg, but it's not always the same pokemon. There different pokemon he can give.