Heat pumps
I adore heatpump dryers. They use 70% less energy compared to other dryers, both vented and normal condenser.
The heating of the room is the lesser issue with normal condensers, the temperature inside is a big concern (for me, at least).
Target temperature for Bosch dryers is 85C (thats 185F), the low temp option drops that to 75C (or about 170F).
Great for sanitizing, horrific for a lot of stuff.
There a cycles that go lower, but for large loads cycle times then grow rapidly.
And they just have to run hot to dry efficently - the lower the gradient between inside temperature and room air the slower the drying.
A heatpump dryer never goes over 140F, basically.
I yet have to experience any major shrinking.
Drying results are certainly different - a lot of people aren't used to the feel of cool dry laundry out of a dryer, so might find it usefull to bump up drying level to "feel" the laundry as dry even though it might be just fine otherwise.
If you have a Miele I assume you have 1600rpm spin model?
Then both types of dryers should finish any load in less than 2h, give or take.
Not sure about which variant Miele is using the NA market, but I have the higher efficency version of the two over here and the longest load to dry is my load of underwear and T-Shirts which is comprised of up to 30 T-Shirts plus 2 weeks worth of underwear and that usually is done in 2h give or take.
My towels are often done quicker as they just weigh less and dry pretty fast in the high airflow.
Main downside is filter cleaning as most heatpump dryers have some more filters, though some have unified the filters into one unit in the door area (quite a nice design, though there is debate on if that makes the heat exchanger block quicker).
Samsung CA offers an HP dryer for a litte more than the Bosch, Costco CA has it listed for 1150:
www.costco.ca/samsung-4.0...
Quality is quality there, but surely worth a look - as it is basically a carbon copy of an EU design I can tell you that while not exceedingly durable, their dryers are not terrible like some people describe the US machines.
Not sure if you are limited space wise, but Whirlpool has a full size ventless heatpump on offer for about 1600$.
Main issue with compact dryers is that they really are small, even when paired with a compact washer. Sheets tend to tangle and creasing will be increased.
So having that additional space in the drum (almost twice the size, basically) will certainly help with results.
And it has the HybridCare system which can boost drying speed in tradeoff for efficency - but in general it won't be much fast even though it is larger.
wagnerappliances.ca/products/whi...
Just for completness I'd mention that Whirlpool has an HP compact dryer aswell priced las low as 800$ at Lowes.
My family actually owns one of that design over here and we are generally quite happy with it.
It isn't a particulary fast design, not generally the best performer (tangeling, as often common). The filter is quite annoying and needs changing once a year with our use as it's plugged and starting to fall apart, but a new sponge is a fiver and that's that.
I'd go with the Samsung instead, much more user friendly, though, and quality is on par if not better with it.
www.whirlpool.ca/en_ca/la...
Unfortunaltley there appears to be no Arcrelik sourced brand in CA yet.
USA has gotten Blomberg and Beko - their main brand sover here - and their HP dryers are pretty good price/performance wise.
Can tangle aswell, but dry much nicer than the WP ones in my opinion and are a breeze with maintenance.
So, yes, TL:DR:
Before spending the 1100$ on a Bosch condenser that does not reverse tumble, get a cheap HP from Samsung or such.