Don't know how much money you want to spent and if you can use the whole two days. If you rent a car I would recommend a trip into the cloudforest, as there are more and more colorful birds to see. Make sure you arrive at your destination very early, since the activity drops pretty fast and around 11AM finding new birds can really get difficult. You could also take a bus which is a whole lot cheaper! It was about 1$/hour of driving when I was there. You could let them drive you to Mindo, which is quite cheap, has lots of very cool birds and is easily accessible. You could also hop off the bus a few miles before you reach Nanegalito, where the Tandayapa Pass starts. Most bus drivers though don't really know where that is, so you'd have to make sure somehow they don't just drive by. Then you could hike up the street up to Tandayapa Lodge and bird on their property for 5$ (I think). Their hummingbird feeders are incredible. I did that several times, started around 5AM in Quito with bus, hopped off, then hiked the 4,5miles. Sometimes I could also hitch a ride for about 50cents/1$ and then I birded until it got dark. But don't forget to bring something to eat and drink, since you won't encounter any place to eat there. You can also hike a little along the Old-Nono-Mindo road just below the Tandayapa Lodge which has some different bird diversity than the lodge property (for example I saw Cock-of-the-rocks almost always there, but only once on the lodge properties). There are also Toucan barbets, Plate-billed Mountain-Toucans, Beautiful Jays and other. The hummingbird feeders at the lodge are more than incredible, with about 15 species garantied and often a few additional ones in the surroundings.
If you go to Mindo, you'll arrive a little later, but have more comfort. There are restaurants and stuff in the village. I'd recommend to stay one night at Yellow House Trails, which is cheap and where you have about a 40% chance of seeing a Spectacled Bear (I only heard one running away through the forest). I also liked birding around the ziplines, where some feeders attract several tanagers, hummingbirds and goodies as Motmots and Toucanets.
If you'd rather bird the high Andes the Papallacta Pass is an interesting region, but I don't know if you'd find the good trails without a guide. The chances of seeing Andean Condor are difficult to estimate, but I'd give a 40-50%
I hope I could help
MfG Maffong