I should have started this process about 10 yrs ago - after living in a small backpacking tent for 3-1/2 months I would have been overwhelmed at all the space!  But I've lived by myself if a 3 bedroom house for the past 5 yrs and have expanded somewhat (my belongings, that is - not me).

Since I travel alone I don't need all the extra space that a couple would need.
gypsy

We had a class B for a few years, made several long trips. DH traveled alone 2-3 months at a time and loved it. The shower was difficult, so we usually used the park showers, which are not always the cleanest. Also, bad weather for days at a time can be a problem. As a couple however, and this is now our only home, I would not be able to do in the B, even though we both loved it at the time. Much better than tent camping though, with full hookups, air conditioning, furnace, etc. On the positive side, a B or B+ can fit in almost any campsite or parking lot, and on nearly every road in the country. Not so with a big rig.

Coach House makes very well made products and the Platinum is a B+ or small C depending on how you look at it. Their website is http://www.coachhouserv.com/.
The new Platinum II is built on the Sprinter chassis and should get good mileage.
I know an RV tech who owns a Platinum and he bought it because of the quality he could see and has not regretted his decision. They are well worth looking at if you want a small rig.