Her DH is talllll! They'll probably have to go Maclaren, he'll kick anything else (all terrains excluded).. Albee has the Techno XT and Techno Classic on sale for around $200:
http://www.specialtybaby.com/strolfrommac.html
If their baby is over the 3-4m mark, a Quest might work but it's, what, about 2" shorter? So that might be an issue. They all fold up quite small...
Another option, if they don't mind a larger fold (but FLAT, flat, flat) would be a Mountain Buggy from returnsforsale.com for around the $200 mark... It's certainly no umbrella stroller but with a DH that tall, it might save a lot of frustration. If you take the wheels off a Mountain Buggy is really is totally flat... it's just more time consuming.
I'm tall and have a long stride and Mac, Mountain Buggy, Bugaboo and Valco are the only strollers that haven't driven me mad with kicking the rear wheels. I'm sure that'll be the biggest issue for them finding a stroller--something that works for someone who is shorter, and someone who is quite a bit taller! Adjustable handle strollers should be a consideration.
-N.