Anna's Nail Salon is easily my favorite place to get a mani/pedi in Champaign because it is super affordable ($25 total for a mani+pedi - just a pedi is $22, so you'd be silly not to add on the mani) and the quality of work the technicians put in is 5 stars alone. Every technician I've had has done a really wonderful job! And the massage they give you while your nails are drying is pretty perfect too!
However, I will say a word of caution - make sure you have a lot of time before you head in. The technicians are usually busy and the salon fills quickly. Don't be surprised if you have to wait a while to get in (calling ahead is not always a guarantee that your appointment will start on time).