How old/big is your baby? An Asian-inspired carrier like the Kozy or Equanimity Baby Mei tei would work well for both back and front inward-facing carries regardless of your size. The EBMT does have much longer straps and is less expensive, but the Kozy is a little lighter/softer because the canvas is pre-washed, and you can ask for longer straps. I have an EBMT and it is very nice.
The original style Baby Trekker may be another good alternative. The seat area is not as wide as an Asian carrier, but I think it's wider than something like a Bjorn. And it definitely works for larger Mamas. You can often find them on ebay for cheaper than retail.
Any of the wrap-style slings would work. If you like a woven fabric, I would look at maybe an Ellaroo or a Didymos if you have the cash or can find one second-hand. For a t-shirt, stretchy type wrap, the Mobywrap is a fnatastic deal.
Also, Maya Wrap is distributing a new strecthy unpadded ring sling that can be worn in pairs for two shoulder carries, and then you have a ring sling that can be worn alone, too, which is great for quick trpis, errands, and breastfeeding. It's pretty cool.
You might want to go to http://www.thebabywearer.com
The forums are very active and you can find tons of reviews, comparisons, and distributor lists for each carrier. HTH!