Glad you love the Sienna, Toyota passed Ford in production and sales this year and is now the number one auto manufacturer in the WORLD! Too bad Germany, the Jettas rock, but you still got a ways to go, like releasing hybrid technology?
As a Camry fan, and you have the Sienna, and Dogmatix has a Highlander I believe? Make sure you buy NGK plugs when your tune up is due. Buy a Haynes manual on your vehicle, most modern cars automatically adjust timing, so tune ups are "gravy" for most auto techs. The Haynes manual has fotos, not stupid diagrams like Chiltons. Also, buy a K&N air filter, it costs more than a regular air filter, but is permanent and guaranteed for 100k miles! The oil kits (you spray it on the filter after washing it) costs around 12 bucks, and is recom every 50k miles or so. Most ordinary "disposable" air filters cost a lot of money nowadays anyway, and in 2 or 3 air filter changes your K&N has already paid for itself! The rest of the time is money in your pocket from savings! Many aftermarket auto places like Advance auto parts have lifetime warranty on wire sets. I recom NGK wires for imports, but they are not cheap, but are built exactly to Denso specs and are recom by Toyota and other Japanese auto manufacturers.
I have concerns about Vicky's Honda, it was due for a 60k mile services, and I do not see how in the hades anyone can do it for 30 bucks alone. I checked Honda's website and a servie parts kit alone is 99 dollars, add labor and is more. A lot of mechanics here are wannabes and rip off their customers. They really need an ASE cert program like we have in the U.S.
Last but not least, many places, including Toyota dealerships, offer lifetime warranty on shocks and struts now, if you take care of your import, you can get 200k plus easily though trannys usually give out before then, but 2k is not too much to have a rebuilt installed and keep your vehicle going.
Don't get too attached to your Sienna, this year Toyota is releasing a hybrid Camry, and a Lexus hybrid SUV that has a 6 cyl that gets the HP of a V8! It's only a matter of time before they do the vans and regular Toyota P/Us as well.
My brother in law has a 92 Previa with over 200k on it. Never had any major problems. The thing is larger than the sienna and guess what powers it? A 4 cyl that came stock with headers! Toyota was way ahead of us and still continue to lead the pack. The best thing I respect about them though is they have factories in the U.S. and Toyota is a dream company to work for.
http://www.ngk.com/http://www.knfilters.com/