You might want to pass on the TF10 for mostly classical use. I own one and it's good all-rounder great for rock and pop, but I'd rather grab the ER4P or IE80 for classical. Definitely my go to for portability, it isolates well and matches well with a Clip Zip.
I just got my repurchased ER4P today, but I did own one for over a year in the past. is great for high quality recordings, but can sound a bit thin on mainstream tracks. Amazing detail and good instrument separation, but the soundstage is smaller than the IE80 or TF10. It also has a higher amplification requirement, so it will probably be spending most of it's time hooked up to an XM6 on my desk. Comfort is YMMV, I find that the inability to wear than over the ear is a con for people with shallow ears as the extra length of the barrel hanging out of your ear can put stress on your ear canals. Both the foams and tri-flanges are too long for me, I ended up using Klipsch gel biflanges which work fairly well.
If you can spare a few extra bucks, give the IE80 a try. It's the best of the three for soundstage and also the best for use with poor quality recordings. Sounds quite similar to the HD 650 to me. I find it the most comfortable of the three due to the light weight, shallow insertion, and over the ear fit. However, isolation is below average even with foam tips and it trades detail and speed for warmth and weight.