Got my Glock 33 a few weeks ago -- my first and only gun (so far).
Right now I'm using it as a primary weapon - have the 13 round mags with mag sleeves and 2 of the stock 9 round magazines as well.
I knew after shooting numerous kinds of guns - a few sigs, Walthers, a couple of revolvers, and numerous different glocks, that I would have a glock for my first weapon mainly for the ease of operation, cost/reliability/reputation aspect, etc.
After having narrowed it down to a mini-glock, I went to the range with a more experienced friend and we shot a 26, 27, and 30. Surprisingly, the 30 was the easiest for me to shoot. This was the exact opposite of what I was expecting because I'm a little guy (5'7") with little guy hands. I fully expected to not like the feel of the bigger, more powerful glock and the bigger grip and to revert to the smaller caliber gun because it would be easier to control. Not the case.
I shot more accurately with the larger caliber pistol and felt like I had a better grip on the somewhat more bulky .45.
I was set on a Glock 30SF, and started looking to buy one, but then the instructor of my CCW class told me not to overlook the G33. He said that it had less overall recoil than the .45 and that the 357 SIG is a more reliable feeding shape, has a more accurate trajectory, performs better from shorter barrels,
performs better through barriers and yet is less prone to over-penetration in soft tissue. I did some research online and talked to a few more experienced shooters.
Even though I have heard some negative about it (lack of ammo availability, ridiculous recoil, not a good first gun to own, no better or more accurate than a 9mm +p+, etc, etc) I went ahead and purchased one anyway, and I have been very happy with it in the short period of time I have owned it.
I really don't see where all of the negative criticism comes from. I wouldn't call myself a novice, more of a newbie if you will, and after 500 rounds, I have had 0 trouble with the gun so far. Ammo is plentiful (have purchased from local Cabelas, online, etc, both JHP and FMJ ammo without any problems whatsoever), and easily concealed as well.
The thing is as easy to control as any other mini glock, and to be honest, even without the pinky grip, it's still a fun gun to shoot and may be even more comfortable without an extension.
I hear people complain about their hand/wrist hurts after putting a couple hundred rounds through it, but I have no clue what these folks are talking about. Even when really laying down rapid fire, I have no problem hitting my target with each shot I take. Double tapping is also no problem whatsoever.
All in all, I have been very happy with my purchase and look forward to expanding my horizons as far as caliber, size, and brand go, but I could not be more pleased with the purchase of my Glock 33.