I have owned many Glocks from G17 to G35 and have never had a problem with recoil springs. The most recent Glock that I traided away for a G-27 was a 96 issue G22 that had thousands of rounds thru it and NO problems at all.
If you feel that you need to change out the recoil spring, I would recomend Wolf springs, but unless your Glock is showing signs of wear I wouldn't worry about it.
Have you fired your G22 since you got it, and if so did it show signs of sluggish recoil?
This is the one reason I own Glocks

I have never had a problem with a stock Glock. I know several who have put after market products on their Glocks and had many a problem there after. One guy I know who shoots 1911's just fine after investing many a dollar to make them shoot very well. Showed up at an IDPA with a new G23 and insisted on shooting SSP with it. He bragged about all the new bells and whistles that he added to the G23... new springs, new trigger group and new hi-visable fiber sights even, only to have many a problem during the match to come in last of 8 shooters. I shot with a stock G27 to come in second :roll:
I'm just not into all the extras when stock works, and very well. But if your recoil spring needs replacing by all means do it, but I would have it checked out by a certified Glock repair person.
JMHO
