I had all officially released webOS devices expect the original Pixi and used all of them for a while.
I started with a used Pre in 2010, after HP bought Palm. I quickly handed that one to my wife and got myself a new Pre+. I actually dumped a much more powerfull HTC HD2 for those devices. But I was already spoiled... the task switching on other platforms is SO MUCH PAIN if you once experienced webOS. (Which holds till today... when it comes to task switching none of the new and shiny OSes has any advantage over the old Windows Mobile. I carried a long an Android GNex for some time now and can't stand it... I also trying out Windows Phone 8 right now on a Lumia 925, which I'll probably hand to my mother.)
I bought a cheap Pixi+ as developer device, because webOS could not sync with my egroupware calendar. So I had to build something myself. I must admit that I was quite overwhelmed by the Pixi+. The keyboard was much better than the Pre's. Also the device felt nicer in my palms... I really liked it, so I started carrying around two devices, a Pixi+ and a Pre. Because the Pixi+ really got very few love... a lot of apps where missing (and there was no app tucker box, yet). The CPU speed was not such a big issue... more the fewer memory which I also experienced as issue on my wife's Pre-.
I then waited for a QWERTZ Pre2, which never came up and finally got a QWERTY Pre2 in january 2011. I again handed this one to my wife, because her Pre- was starting to fall apart. Also I got used to the Pixi keyboard, which I know used for everything that included a lot of typing (i.e. E-Mail, SMS, Twitter, Facebook... those were good days).
I then got a Veer at launch and fell in love with it right away. It got the same superior keyboard and a very similar touch and feel like the Pixi+. Also it got a lot of power (compared to Pixi+ and Pre-/+) and memory. So I could go with just one phone again and was happy as can be. The smaller display never was an issue for me. Some apps where still missing, but soon app tucker box arrived and solved that issue, too.
I got a TouchPad at launch, too. Was nice. Did not do TTS with the Veer. That saddened me a bit... At that time I did not really need a tablet TBH. I just bought it, because it had webOS on it... I had some spare money, at that time. When I compare webOS on Phones and on the Tablet, I still like the phone version better. On the other hand, webOS makes a real great tablet OS, too. Far better than anything else out there... again, because of the easy task switching and stuff.
I got a Pre3, sadly not on the firesale or anything close to that... but they popped up on ebay shortly after that. Sadly that was quite expensive. The time I got my Pre3, my Veer needed to go to support... It had some issues and rebooted / switched off at random events. It was in support for like 5 months... So I used the Pre3 during that time. And that was quite a let down... sure, the display is much bigger and in some apps I really like that. The most effect that had in the e-mail app for me. I constantly move read e-mails into different folders, i.e. not delete them but archive them into different categories... I could easily do that without scrolling on the Pre3, where I would have to scroll a lot on the Veer. But, the big let down was that it had even less memory available for webOS than the Veer (which had less memory available than the Pre2), because of the different SOC.
Because of that memory issues the Pre3 was close to unusable for me in the beginning... I had some apps constantly open on my Veer. If I did that to the Pre3, it would throw Too-Many-Card-Messages (no that is NOT an error) at me or, if the message was patched away, it would bog down swapping memory a lot... especially the web browser managed to kill my Pre3 a lot. So I switched back to the Veer as soon as that came back from support and got a whole new body. Yeah..
Ah, yes.. of course I handled the Pre3 to my wife. She says, that the Veer would me too small for her.
So.. I'm a bit awkward. I'm sorry.. I like the Veer and bought two of them as backup. That's my story.