Oppinions of UIs are very subjective. Personally, I love my Android UI (CM7 using LauncherPro) on my phone. My other half doesn't, and prefers her iPhone (we have both used both).
Price-wise, I completely agree. The way Android phones seemed to take off was the number of good-but-cheap models available. The drastically undercut Apple, increasing market share (Apple only have one price point, expensive, limitting their market). As market share increased, so did the quality of UI, hardware, and apps, helping increase market share even more.
This hasn't happened with tabs: Cheap ones are mostly terrible Chinese knockoffs, so bad reviews put people off buying 'droid tabs in general. High spec ones are great, but compete for the same market as Apple, and most of that market are already fanbois (plus, from what I have seen, the iPad is better as a tab than any droid-based offerrings).
What is needed is a killer low-priced reasonable-performance droid tab. The £150-£200 point is where I see the sweet spot, although look how well the ZTE Blade (Orange SanFransisco) did at £100. If Googorola can get something into the market at the £150 point, I think it will make a world of difference.