For a small practice amp, with its speaker used above its low frequency impedance loopiness a high output Z amp ought to work well. One of the first amps I built was an open loop PP amp running KT90's. Down to the upper bass that amp was really nice. Below that, it behaved just like any other low damping factor amp I've ever heard.

So, the goal of mine is to build a small amp with minimum fiddling. I have EV Wolverine 8's for the box and want to feed them about a Watt. I would prefer to use pentodes for the gain stages. Can't quite make up my mind on the final. Or how many stages...even or odd number for that matter.
cheers,
Douglas