Re: Worth the money? Depends
I'd agree with the above, and add one more. I'm not saying this is worth the money (and I have no idea if OO/LO does this) but if you send an e-mail with text in it such as "I attach the..." and don't attach anything Outlook will check you meant to send it without an attachment. Which is surprisingly useful, and should cut down on e-mails called "this time with attachment".
...BUT...
Replying to e-mails embedded in the reading pane is an experiment too far, however,
Oh, also saying after a spell check "you're good to go" really grates.
WHY DOES IT SHOUT?
The cursor animation in e-mails (in the preview, not used the final release) also lags behind the letter being typed, which is really off-putting if you look at the screen and not the keys when typing.
Excel has an odd habit of perpetually rendering cell contents. So, you type =SUM(yada yada) it stays there, or appears in another cell while the cell you'd worked on shows the answer. When you scroll the spreadsheet it stays where it is. It even survives minimising the thing, only solution is to close the sheet and reopen. After saving when there are a lot of tabs it will freeze and show just the top left 10x10 grid until you click outside that grid.
And finally, why does it keep insisting on using US English? Windows must tell it my keyboard type, and my timezone, preferred language and location. But, no, first time I type "analyse" it is changed to "analyze" (which can't even be a word, given its etymology) so I have to go and find how to change the default dictionary.
...and reporting them as bugs is a pain, because it wants to send a screenshot. Yep, I'll do that, a lovely screenshot of that confidential spreadsheet I was working on...